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Digestive Functions
| step/term | function/definition |
|---|---|
| ingestion | eating |
| ingestion | drinking |
| propulsion | movement of food thru alimentary canal |
| propulsion | swallowing |
| propulsion | moving bolus thru digestive organs |
| propulsion | moves feces toward rectum/anus |
| propulsion | peristalsis |
| peristalsis | major means of propulsion of food thru gut |
| mechanical breakdown | chewing food |
| mechanical breakdown | mixing food with saliva |
| mechanical breakdown | churning food in stomach |
| mechanical breakdown | segmentation |
| segmentation | constriction of intestine that mixes food with digestive juices |
| digestion | series of catabolic steps that involves enzymes that break down complex food molecules into chemical building blocks |
| digestion | break down of food |
| absorption | vitamins, water, and electrolytes, and salts are reabsorbed |
| absorption | passage if digestive fragments from lumen of GI tract into blood or lymph systems |
| defecation | elimination of indigestible substance via anus in the form of feces |