| A | B |
|---|
| Digestion | process of breaking down food into components small enough for absorption into the body |
| Absorption | process of taking substances into interior of body |
| feces | body waste, including unabsorbed food resideue, bacteria, mucus and dead cells, which is excreted from gastrointestinal tract by passing thru anus |
| gastrointestinal tract | hollow tube consisting of mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus, in which digestion and absorption of n. occurs |
| lumen | inside cavity of tube, such as gastrointestinal tract |
| transit time | time b/t ingestion of food and elimination of solid waste from food |
| mucus | thick fluid secreted by glands in gastrointestinal tract and other parts of body. It acts to lubricate, moisten, and protect cells from harsh enviroments |
| enzymes | protien molecules that accelerate rate of specific chemical reactions wh/out being changed themselves |
| hormones | chemical messengers that are produced in one location, released into blood, and elicit responses at other location in body |
| Mucosa | layer of tissue lining gas. tract and other body cavities |
| saliva | watery fluid produced and secreted into mouth by salivary glands, contians lubricants, enzymes and other substances |
