Know the function of the pancreas, esophagus, large intestine, small intestine,

Question

Know the function of the pancreas, esophagus, large intestine, small intestine, stomach. Know what the lesser omentum and the greater omentum are and where each one is found. Know the order of the layers digestive tract wall starting from the lumen to the deepest layer. Know what parietal cells, chief cells, and G cells secrete and know where each cell type is found. Know what rugoe, circular folds, villi and microvilli are, where each one is found, and what their functions are. Know what gastric pits and gastric glands are, where they are found, and what the function of each is . Know the function of pepsin and its pre-cursor and WHY it is has a precursor in the first place. L. Know how stomach acid is produced- remember the chloride shift

Explanation / Answer

(1)

Pancreas: produce digestive juices that are released into the small intestine, also regulated blood glucose levels by endocrine function (secretion of insulin and glucagon hormones)

Oesophagus: forces food from the throat into the stomach by peristalsis

Stomach: holds the food, and produces strong acids which aid in breaking down food. Also has churning action which turn food into chyme so the body can digest it.

Large intestine: absorb water from the remaining indigestible food matter and responsible for processing waste so that emptying the bowels is easy and convenient.

Small intestine: Most of the digestion and absorption of nutrients takes place in this region.

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