Mary Roach’s book Gulp (Adventures on the alimentary canal) presents a series of adventures in gastroenterological studies. It is an investigation of our digestive system right from the mouth to the anus. It is simply an exploration to the human digestive system. The book gives an in depth analysis from the time we smell food, taste food, swallow, digest and finally excrete the undigested food material. Roach writes about the alimentary canal, which is a long tube from the mouth to the rear, in a way that makes science such an interesting topic. Where many people have seen writing about the ...
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Digestion occurs in the gastrointestinal system, which is composed of the gastrointestinal tract (GI tract) and the associated accessory organs.The process of digestion occurs through six steps, namely ingestion, secretion, mixing,digestion, absorption and defecation. (Tortora&Derrickson, 2008).
Anatomy of the digestive system
The GI tract or the alimentary canal is a long winding tube that measures approximately 30 feet (9 meters) in length. The mouth, esophagus, pharynx, stomach, small intestine, large intestine and the anus make up the GI tract.The salivary glands, tongue, teeth, gallbladder, pancreas and the liver make up the associated accessory organs (Tortora&Derrickson, 2008). The mouth. The mouth starts with the ...