Essays on Hypothalamus

The study of endocrinology looks into ordinary and abnormal hormonal behavior. The endocrine system includes internal organs that secretes hormones. That is to say, endocrine glands secrete hormones into the bloodstream. These endocrine glands are essential organs of the human body that imperative to maintain various human functions, not to mention, life itself. Hormonal glands that make up the endocrine system influence many relevant factors such as pregnancy, capability to breast feed, and also the process of a child developing normally. The endocrine system aids in the regulation of a human’s basic bodily functions. Given that, these functions ...

Hypothyroidism is an endocrine disorder that results from thyroid hormonal deficiency. In the U.S. and other regions that have sufficient iodine consumption, autoimmune thyroid or the Hashimoto disease, normally causes hypothyroidism, while worldwide, iodine deficiency is the leading cause.

Pathophysiology

Hypothyroidism can be caused by malfunctioning of the hypothalamus, thyroid, or pituitary gland, as all of these result from the same “negative feedback mechanism” (McCann, 2011, p. 496). Despite belonging to the same mechanism the hypothalamus malfunction rarely causes hypothyroidism, and when it does, it is called ‘secondary hypothyroidism’. While the malfunction of the gland is referred to as ‘primary ...

The fact why the book "The end of overeating" by David A. Kessler is considered a bestseller becomes evident from the very first page. The author provides the reader with rather pressing issues, which are perceived very easily. The proposals are not very complicated; hence, the material is presented very succinctly. Kessler presents the up-to-date problems regarding overeating and excess weight in a facile manner. From the very first chapter of his book, he interests the reader to the point that s/he wants to read it all at once. His approach to the problem of overweight can be defined ...

Rat Endocrinology

Hypothalamus 1. What is the molecular mechanism to release TRH? TRH refers to the thyrotropin-releasing hormone. This hormone is produced by the hypothalamus. Before the full activity of TRH, some tightly controlled processes occur in the body including the appropriate folding of prohormone to move to the secretary pathway, the processing after translation, and movement of the peptides, which are processed, towards the secretary granules for secretion (Nillni n.p.). TRH develops from bigger inactive precursor (known as proTRH) as a result of modifications after translation and moved through the controlled secretary pathway. Prohormone convertases (abbreviated as PCs) including PC1/3 ...

Black Cohosh

Black cohosh is also known as black snakeroot (as the name appeared in the U.S. Pharmacopoeia in the year 1820), bugwort, columbine-leaved leontice, tall bugbane, cordate rattle top, rattleroot, macrotys, papoose root, and battleweed. Its Latin name is Actaea racemosa or Cimicifuga racemosa. Macrotys actaeoides is also a synonym for the drug (Frostburg State University, frostburg.edu). It belongs to the Ranunculaceae (buttercup) family (Kinghorn A 2). The plant was first described in 1690 in Phytographia by Leonard Plukenet as Christopheriana facie. Later in 1751, it was named as Actaea racemosa by Linnaeus. However, the name was later changed into ...

Abstract

This paper discusses how exercise stimulates the release of growth hormone. Older people tend to have lower levels of the hormone. As a result, mechanisms have been formulated to help deal with the deficiency which includes inducing the growth hormone into the individual’s body. This, therefore, leads to the discussion of the exact mechanism through which the growth hormone facilitates exercise, maintains growth and repair of worn out muscles or even reverses the aging process among the aged. Also, the functions of IGF-I binding proteins during exercise and its importance in aiding the release of the GH is ...

In fact, there are considerable differences in physical activity, emotions, interests, perception between men and women. Numerous scientists have explored and discussed if these differences are conditioned by social factors or biology. To make it clear, some think that it is biology that defines human behavior, tastes, skills etc.; others adhere to the opinion that society is a more influential impact on formation of behavior. In other words, socially created features of men and women are called "gender", "sex" is determined by biology. Unfortunately, nowadays it is possible to see numerous mistakes and discrepancies concerning the use of both ...

Eating Disorder is a condition that includes self-basic, cynical musings and emotions about body weight, food and dietary patterns that disturb typical body operations and day by day exercises. Most dietary issues revolve around concentrating a lot on your weight, body shape and food, prompting risky eating practices (Agras & Apple, 2008). These practices can altogether affect your body's capacity to get satisfactory nutrients from the diet you choose. The most well-known dietary problems are anorexia nervosa, bulimia nervosa and voraciously consuming food issue. Eating disorders, among other recognized disorders is the most fatal, considering that it is harmful to ...

Abstract

Growth hormone is one of the many hormones released in the human body. This paper discusses the relationship between the growth hormone and exercise. The exact mechanism through which the growth hormone facilitates exercise is discussed in the paper. It is noted that the growth hormone is released rapidly in young children and teenagers but the production slows down with age. Other factors such as gender, adipose and diet also play a huge role in regulating the release of the growth hormone. For that reason, it is recommended that the aged people should exercise more frequently to induce the ...

Abstract

This paper examines what mood disorders are and what individuals with a mood disorder are likely to face. This document encompasses the different types of mood disorders and how they affect an individual in a varied manner. Most importantly, the biological basis of each has been discussed at length. Depression is the most common mood disorder, and that is why -in one way or another- all other odd disorders are likely to revolve around depression. In general, when a person has a mood disorder, they face extreme mood - either too happy, too anxious or too sad. All these ...

The human body consists of trillions of cells that work together synchronously for the maintenance of an organism. The metabolic needs of all the cells in the body are almost similar. For the well-being of a human body and the proper functioning of all the cells, constant internal environment needs to be maintained by providing the cells with oxygen and nutrients (Homeostasis and Regulation in the Human Body < OpenCurriculum, 2016) The internal environment of the body is tissue fluid, which bathes all cells making up the body (Mader, 2016). The composition of the tissue fluid must always remain ...

There is a lot of focus and puzzles on hypoxic drive in the modern society. What is hypoxic drive and what are the processes that facilitate it? Hypoxia refers to a condition where there is lack of oxygen in a part of the body or the entire body. In this condition, the patient’s body utilizes oxygen chemoreceptors rather than carbon dioxide to regulate the respiratory cycle (Greaves et al. 120). This essay discusses biochemical, physiological, epidemiological, and clinical evidence to support hypoxic drive in the chronic hypercapnia patient (Galvagno 58).

Macro and micro neural circuity involved in respiratoty/ventilator drives and pattern generation

Rhythmic respiratory movements originate from neutral activity. Specialized ...

What Makes the Brain ‘Tick?’

The human brain is a very complex organ that controls each and every function of the human body. Without its proper functioning and control, the body can suffer adversely. The brain makes decisions for the body, is responsible for making the personality of a person, helping in making judgments and preserving the memory of the person. Moreover, the human brain is also responsible for the abstract concept of thinking that cannot be defined very accurately. Yet every person with a normal brain has a strong thought process. There were many things that were unknown to me before going through ...

General features of melatonin

Melatonin is a hormone, which is thought to play an important role in daily processes of humans’ lives, being secreted by the pineal gland, which is an endocrine gland, located in the middle of the brain. After its discovery the first function (which later gave the name to this hormone) was the ability of this hormone to lighten one’s skin color. This experiment was conducted on frogs, however even nowadays everybody knows that our sunbathing results in suntan due to activity of melatonin. This is a so-called skin-darkening effect of melatonin. First discoveries of this hormone were done ...

Source One:

http://uofmhealthblogs.org/womens/pregnancy-childbirth/oh-body-will-change-pregnancy/8463/

Posted by Helen Kang Morgan, MD on September 24, 2013 In addition to the obvious physical changes as your belly grows during pregnancy, what other surprises may your body have in store for you? Pregnancy is an exciting time, but often one filled with many questions — is my baby healthy, can I do this/eat that, and what the heck is happening to my body?

During your first trimester, you’ll probably feel tired, perhaps more tired than you’ve ever felt before. Get as much rest as you can. About 70 percent of women will also ...

Executive Summary

The objective was to compare effects of GnRH antagonist and standard long protocol agonist on number, and the quality of Metaphase II oocytes, and on reducing risk of hyperstimulation, in patients who are affected by Polycystic ovarian syndrome. Polycystic ovarian syndrome is a common endocrinopathy of the women who are in reproductive age, which is a first cause of the anovulation. GnRH agonists are used in the IVF to avoid premature LH surge before the retrieval of oocyte. Research findings from this study can be significant to various Centers for Reproductive Medicine, and also to all the institutions that practice ART. ...

1. Introduction: The current environment especially in Western societies promotes increasing consumption of calories along with a relatively sedentary lifestyle thus fueling the global obesity epidemic. Body weight is regulated by complex interaction of genes that promote energy storage along with environmental factors that promote enhanced energy intake and reduced energy expenditure. This obesity promoting environment makes it difficult for many people to sustain weight loss for long periods of time and adequately maintain healthy lifestyle habits. Obesity can overall have many devastating effects on human health such as increased tendency to develop high blood pressure, cardiovascular problems and strokes. ...

Introduction

The CNS is a connection of nerves which executes control over the mind and most of the body functions. It is made up of two parts which are the brain and a spinal cord. The brain forms the core of our thoughts by interpreting what lies within our external environment. Majority of the movements made by the body originate from the brain. It coordinates those movements and ensures that they are well executed to enable human beings to carry out their daily duties. Information which originates from body organs like the eyes, nose and the ears is interpreted by the brain ...

Introduction

Aspirin is one of the most commonly used drug in the world. The generic name is acetyl salicylic acid and the drug belongs to the group of non- steroidal anti-inflammatory medicines, which works by inhibiting the production of compounds in the body that cause pain, fever, inflammation, and blood clots (Koester, 1993). Aspirin is also a member of the salicylate family of compounds as it is synthesized from salicylic acid, which was discovered in Oxford (UK) by Edward stone in 1793 and first synthesized in the laboratory in 1897 by a German scientist, Felix Hoffmann of the Bayer company (Rinsema, 1999). ...

Introduction

Depression is a disease affecting a large part of the population today. Though many people experience sadness from time to time, depression is a much more complex disease. It affects a person’s daily life and often results in physical pain. Unlike the occasional feelings of sadness that fade away, depression lasts longer (NIMH, 2014). Biopsychology involves the scientific study of the relationship between behavior and biology (Green, 2013). In the study of their relationship, biology and behavior mostly interact in the brain and nervous system. It will also apply to the analysis of depression in relation to the biology; this study ...

The debate on sexual orientation has been going on for a long time in the world. There are many researches some claiming that the homosexual people are socially assimilated towards being homosexual from the social environment. There are others who hold to the opinion that it is entirely a hormonal aspect that develops as one grows. There are those who take a position in between the two and belief that gender and sexual orientation are as a result of the interplay between the environment and the genetic and hormonal state of the individuals. As it was learned recently, the hypothalamus plays an important ...

The Process of Spermatogenesis in the Male Testis

Spermatogenesis is an intricate process that involves mitotic cell division, meiosis, and its process. The regulation of spermatogenesis involves the endocrine and the paracrine mechanisms. The spermatogenesis endocrine stimulation involves the follicle stimulating hormones (FSH) and the luteinizing hormone. The luteinizing hormone acts through the intermediary testosterone that is produced by the leydig cells in the testis. A male fertility requires the production by the testis with large number of normal spermatozoa by spermatogenesis process. There are three major steps subdivided in the process; the mitosis, meiosis, and the transformation of the round spermatid. The multiplication of spermatogonia is ...

Summary of article one The first article titled “An Overview of the Pituitary Gland: The Endocrine System's Master Gland’’ begins by restating the role pituitary gland. According to this article pituitary gland produces hormones which have effects on the various parts of the endocrine system. These include adrenal glands, thyroid glands, ovaries and testes. The author goes on to state that pituitary, which measures about one third of an inch is located at the base of the brain next to another important part of the brain called the hypothalamus. Both hypothalamus and pituitary gland functions overlap according to Reham. ...

Genetic Research

Features genetics homosexuals have been studied little. Scientists are searching for the gene or genes of homosexuality since the 1980s. As in many other studies, trying to distinguish the symptoms of congenital acquired an important material has been obtained from the analysis and relatives, especially identical twins. It has been shown frequent presence of homosexual men several older brothers, and of manifestations of homosexuality in both identical twins, even in cases where they were brought up separately. According to the research, if identical twins homosexual men, the chances are that he will be inclined to homosexuality, is 52%; ...

Introduction

Cortisol is a steroid hormone produced in the adrenal glands located on top of kidneys and is usually released in response to particular circumstances and events, including acute stress and waking up in the morning. It significantly affects the body’s processes and helps its effort to maintain homeostasis (Aronson, 2009). It also plays a major role in human nutrition, as it helps regulate energy by determining which type of substrate (and which amount), protein, fat, or carbohydrate, the body needs to meet its demand efficiently. If cortisol stress hormone is increased for long periods of time and becomes chronically elevated, ...

Obesity is a disease, in which metabolism is violated and there occurs excessive accumulation of body fat. According to most researchers of this problem, the main causes of obesity are excessive food intake and lack of physical activity. Heredity also plays an important role, but people run hereditary mechanisms of obesity themselves by not respecting the basic rules. What contributes to obesity? Irrational, unbalanced, abundant food. It is consumption of excessive amounts of easily digestible carbohydrates (sweets, flour, etc.) and fats (butter, fatty meats, lard, etc.) and inadequate intake of vitamins, essential trace elements and other vital components of ...

(City, State)

Question being investigated

This study was aimed at testing the hypothesis that there is no close-paralleling of the raised rate of metabolism arising from contraction of muscles by hyperpnea, and thus arterial 02, pH, and C02 do not remain comparatively constant all through most of the moderate exercise range (Carli, et al., 1967). The alternative hypothesis was that a feed-forward mechanism is responsible for hyperpnea.

Importance of the question/publication

There is still uncertainty on the mechanism resulting in raised ventilation or hyperpnea, in the course of an exercise in spite of over a century of research, hypothesis, as well as debate. Due to the close link ...

Oxford dictionary defines a theory as a set of principles based on generalizations that have been crystallized through a series of observations. It is a supposition that aims to explain an abstract concept wherein those generalizations made are independent of a particular thing that is being explained. In a scientific perspective, a theory serves as a skeleton in explaining observations and assumptions from a series of hypotheses that can be tested. An individual is referred as a theorist when he or she develops theories. Charles Darwin's Theory of Evolution is one classic example. To date, there are also various emerging theories that may explain the probable cause or existence ...

Introduction

The fight or flight response is one of the body’s autonomic defense mechanisms. This innate defense mechanism gets triggered whenever a person encounters a harmful entity or event, or basically anything that one may perceive as a threat to his survival. In such cases, the body’s hyper-arousal state which is characterized by dramatic changes not just in one but across all organ systems. The fight or flight response actually started as a simple theory by Dr. Walter Cannon. Dr. Cannon explained that any animal is subject to a reaction called fight or flight response which is characterized by a general and fast-acting discharge ...

Pituitary

The different functions performed by the anterior and posterior pituitary in terms of sex The anterior pituitary which is also known as the adenohypophysis, is basically an interior lobe (glandular) which alongside the posterior pituitary, makes up the pituitary gland. The posterior pituitary releases oxytocin which stimulates and smooth muscle contraction in the mammary glands and the uterus. The anterior pituitary on the other hand stimulates release of thyroid hormones, FSH and LH to stimulate sex cell production and release of sex hormones; it also stimulates sex cell production as well as secretes prolactin to stimulate milk production. ...

Introduction

The thyroid gland is an essential gland found in various vertebrates, and has thyroid follicles (comprised of thyroid epithelia cells), which are supplied by a dense network of blood capillaries. The thyroid tissue’s main function is the biosynthesis and secretion of the thyroid hormone, which is an essential biological molecule existing in either of two forms, T3 and T4. The activity of the thyroid gland is controlled through the neuroendocrine system, which involves the hypothalamus and the secretory actions of the pituitary gland. TSH plays a key role in stimulating the thyroxin-binding globulin (TGB) and the uptake of blood iodine ...

It is prudent to begin this discussion by pointing out that there is no definite definition for stress, either as a condition or a word. Therefore, its meaning depends on the context of use. Accordingly, this discussion focuses on stress as a situation that disturbs the equilibrium between a being and its environment; the feeling a being has that demands surpass its resources. This condition no doubt precipitates change in the body’s hormones serum level, as the body tries to respond or protect itself from the stressful stimuli. The most common response is the increase in the levels of hormones, which is geared ...

Introduction

Anorexia nervosa is psychological disorder in which a person has an abnormal eating behaviour, so that the person can lose weight. The word anorexia nervosa was first used in 1873, by one of Queen Victoria’s physician known as Sir William Gull. There are two types of anorexia which are the restricting type and binge-purge type. According to the medical term, this disorder is said to be lack of appetite (Kaye, 2009, p.450). The people who are suffering from it have fear of gaining weight. This prompts them to do whatever it takes to lose weight. Anorexia is mostly experienced ...

Introduction

Pain is an essential part of the body’s defense system which is perceived as an unpleasant feeling. Pain produces a quick warning to the central nervous system to start motor response as a minimization of harm. Lack of pain perception is dangerous can cause grave problems such as Auto-amputation, corneal scarring or self-mutilation. Researchers in the medical profession have distinguished between pain and what is known as nociception. Nociception occurs when signals get to the central nervous system as a result of the activation of nociceptors (Svokos & Goldstein, 2009). Nociceptors are special sensory receptors which relay information regarding tissue damage. Pain ...

Journals

Journals

Introduction to Psychology

Psychology is introduced as a scientific study of behavior. It also has a mental element. The professional is concerned examination and analysis of behavior. This is done in order to understand, predict, control and explain the behavior of that person. In the chapter, one is also able to learn the various approaches to psychology. This fundamental as it equips the learner with basic skills to pursue the course in-depth. The study provides the learner with a broad range of the various fields of study and practice in psychology. It is extremely vital for the students to have a comprehensive understanding of the ...

Abstract

The body has two main systems that are involved in the maintenance and reestablishment of homeostasis, nervous system and endocrine system. The endocrine system is made up of groups of organs that are involved in the production of chemical messengers known as hormones. Some of the major endocrine glands that are found in a human body include the hypothalamus, pituitary, thyroid, pancreas, pineal, gonad, adrenal, and pancreas glands. Although biological observations that are grounded in the functions of endocrine systems were noted by some of the ancient cultures, the modern understanding of various endocrine glands and the way they produce ...

Homeostasis is dependent on the precision of the organs and organ system regulations in the body. The nervous system works together with the nervous system to regulate and offer coordination to the activities of almost all other parts of the body. Just like the nervous system, the endocrine system uses chemical known as hormones to communicate with other parts of the body. A hormone molecule is a specific messenger that is synthesized and released by specialized cells known as an endocrine gland. The endocrine glands are ductless with the hormones being released into the blood directly and taken to the ...

J.K has acute kidney failure with Rhabdomyolysis. Acute kidney failure happens when the kidneys are suddenly not able to sift waste products from the blood. This results to accumulation of waste and affects the chemical balance of the blood. Rhabdomylosis is caused by skeletal muscles injury (Grau, Poch, &Bosch, 2009). The injury of the skeletal muscles results to the production of different intracellular muscle ingredients. In this case, J.K had an acute renal failure with Rhabdomyolysis because of cocaine and heroin use. Cocaine and heroin cause damage to myocyte. Damage to the myocyte leads to an entry of sodium ...

Community Health Nurse

Hypothyroidism is a clinical syndrome in which there is either deficiency or absence of thyroid hormone in the body. This manifests as a decrease in the metabolic rate in the body, which is seen as a slowing in physical and mental activity in the body. (Orlander, 2013) Thyroid function is controlled by two other organs, the hypothalamus and the pituitary gland. A defect in function of any of these two organs can lead to hypothyroidism. Moreover, localized disease of the thyroid gland itself can also lead to hypothyroidism. Hypothyroidism is usually a primary pathology in which there is inability of the thyroid ...

Critical Thinking

Psychology by Saundra K. Ciccarelli is certainly not one of those disappointing textbooks that lack conviction and are uninspired. The inclusion of this textbook in coursework will undoubtedly ensure that students have a tremendous enlightening learning experience. Moreover, concepts have been simplified to an introductory level, which makes the content easy to understand and interesting for the reader. Unlike dry and rushed textbooks, keywords have been defined on the side of the textbook, which has proven to be helpful when studying for a test. Ciccarelli’s book is ingenious and insightful, and not only do her topics come to life, but ...

It is well documented that human beings are capable of thriving and surviving in the harshest of conditions ranging from the arctic to the equator and with different forms of lifestyles and diets. One of the reasons’ for this is not farfetched, it is the ability of the human body to adapt to various conditions and in turn maintain homeostasis. Homeostasis refers to the human body's ability to regulate her internal environment physiologically in a bid to ensure and maintain stability in response to the instability and fluctuations of the weather and the external environment. Also, homeostasis refers to the ...

Introduction

Policy makers and the general public have been at pains to answer the questions they are confronted with about the intricacies of lesbians and gay men. Questions are abound ranging from whether they are mentally ill to whether the much publicized conversion therapies result to a change in orientation. Questions have also been asked about their stereotyped propensity to molest children. Such scathing thoughts and remarks are fed by stereotypic cultural undertones that many a times depict gay men and lesbians as criminals, immoral, sick and every description that falls short of what our society considers ‘normal’. The implicated individuals have ...

Technical Fact Sheet

CHEMICAL CLASS/TYPE Morphine is an opiate alkaloid, which are a group of chemical compounds with analgesic (pain-relieving) and narcotic (sleep-inducing) properties. Similar compounds in its class include buprenorphine, and the synthetic opioid heroine. It is found naturally in the environment in the sap of the opium poppy plant, Papaver sominferum (National Center for Biotechnology Information, 2012). These compounds exert their actions on the body through the opioid receptors, which are found on many different tissues. Morphine has widespread effects in the body, of which the most prominent are on the central nervous system and on smooth muscle ( ...

Renal compensatory mechanisms

Severe anemia causes the redistribution of blood supply to vital organs such as the brain and heart. This results in a decrease in renal blood flow causing the activation of the renin-angiotensin-aldosterone-system. Activation of this system results in increased production of aldosterone by the adrenal glands. Aldosterone causes increased retention of salt and water by the kidneys. This compensatory mechanism increases blood volume and renal blood flow without altering tissue hypoxia in other organs (Gaspad, 2005 as cited in Coyer & Lash, 2008).

Pituitary gland

The decrease in renal blood flow also stimulates the production of anti-diuretic hormone which increases ...

Theories of Emotion

Darwin’s Theory of the Evolution of Emotion

This theory posits that specific emotional responses, such as human facial expressions, are associated with the same emotional states in all members of a specie (Pinel, 2009). Darwin asserts that just like behaviors, the expression of emotions resulted from evolution where the natural selection process caused the development of the brain mechanisms that are responsible for emotions and motivation (Nesse & Ellsworth, 2009).

James- Lange Theory

This theory suggests that the sensory stimuli that induce emotion are received and interpreted by the cortex, which causes changes in the visceral organs in the skeletal muscles via the ...

EATING DISORDERS

Introduction This presentation is on eating disorders. As a counselor on eating disorder, the presentation will consist of the physiological factors that cause people to eat or not to eat. In addition, the discussion will include the description of the physiological factors for hunger and satiety. In this part, the physiological myths that are on hunger and satiety plus those that are there for physiological factors that contribute to hunger and satiety will be discussed. Moreover, the presentation will try to answer several questions that are there concerning issues dealing with anorexia and obesity disorders that are brought about ...

Introduction

As people grow older there are certain biological and cognitive changes that take place in the body. The human body experiences decreased capabilities in its respiratory, cardiovascular, digestive, neural and urinary functions. Due to the adverse challenges that the elderly face in their later life, it would be great for the various scientists and experts to come together and research more on the theories of aging or the causes of aging. They can come up with more treatments that will increase the immunity system of the old people. This way the older people are able to live their last ...

1. Overview

The peptide hormones are proteinous in nature and may have 3 to 200 amino acids residues. This class of hormones includes all the hormones of the hypothalamus and pituitary, as well as insulin and glucagon of pancreas. Peptide hormones are named based on their endocrine activity rather than their chemical structure; for example, growth hormone is thus named because one of its effects is to stimulate growth. The structure of a particular peptide hormone can vary among different species, with some homology between close relatives. Some small peptides are identical; for example, GnRH is identical among mammals but different in ...

a) Explain why the effort of hormonal (Endocrine ) control tends to be slow whereas nervous control is usually very fast.

Endocrine control is normally slower when compared to nervous control majorly because hormones once released by the endocrine gland have to travel via the circulation to reach their target receptors on the effector organ which generally takes more time. Meanwhile, information relayed by nerves is in form of impulses (that is, action potentials generated due to electrical excitation produced by a change in the charge across the surface membrane of the neuron evoked by the stimuli) that simply travel along the ...

Depression is a common disease which causes the patient to suffer from behaviors and thoughts which are negative and also by certain changes in bodily activities. These physical changes are called neurovegetative signs like body aches, crying spells, low libido, insomnia and weight fluctuations. There are different kinds of depressive disorders like manic depression, clinical depression, dysthymic disorder, postpartum depression, chronic depression and others. There are no specific causes of depression, it is caused by a combination of factors which are psychological, biochemical, genetic and environmental (Lunbeck Institute 2). It is therefore a complex disorder which has no specific treatment which is ...

The brain regulates the choice of a person to be physically active. Stimuli from the environment and from the tissues excite receptors and nerves which in turn excite the muscles. The central nervous system has three general areas that are associated with the complexity of the movement and the familiarity of the various stimuli. The areas include the spinal cord which handles simple reflex actions, the lower brain which organizes more complex responses while the cerebral cortex controls the most complicated responses and stores general motor programs. The spinal cord consists of two-way tracks of nerve fibers which carries both ...