An analysis of the digestive system of a human body

This does not spread but remains confined to the lumen of the small intestine. The sigmoid S-shaped colon — has muscular walls that help push feces into the rectum. Stomach secretes both acid and mucus for self protection.

The third pair are the sublingual glands located underneath the tongue and their secretion is mainly mucous with a small percentage of saliva. Mouth When you eat, your teeth chew food into very small pieces.

Figure 1.

Human digestive system

The trachea has an opening called the glottis, which is covered by a cartilaginous flap called the epiglottis. If defecation is postponed for an extended period, more water is removed, the stool becomes hard, and the individual may become constipated. The olfactory receptors are located on cell surfaces in the nose which bind to chemicals enabling the detection of smells. The emergence of these changes seems to coincide with the inclusion of seeds in the bird diet. The enteric nervous system consists of some one hundred million neurons [34] that are embedded in the peritoneum , the lining of the gastrointestinal tract extending from the esophagus to the anus. Glands in your cheeks and under your tongue produce saliva that coats the food, making it easier to be chewed and swallowed. The large intestine is split into sections: The ascending colon — this includes the cecum a pouch that joins onto the ileum and the appendix another small pouch. During the second week of development, the embryo grows and begins to surround and envelop portions of this sac. Pseudo-ruminants have a three-chamber stomach in the digestive system.

By clicking on this link you can watch a short video of what happens to the food you eat, as it passes from your mouth to your intestine. Both of these IBDs can give an increased risk of the development of colorectal cancer. The pancreas produces and releases important digestive enzymes in the pancreatic juice that it delivers to the duodenum.

digestive system function

After the fat is absorbed, the bile is also absorbed and transported back to the liver for reuse.

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Introductory Anatomy: Digestive System