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APSM Biology 2.4
APSM CA Biology 2.4 Digestion
| Term | Definition |
|---|---|
| amylase | Enzyme found in saliva |
| anus | valve that closed rectum & serves as digestive tract’s second opening to exterior |
| bile | greenish substance secreted from the liver that helps in fat digestion |
| bolus | Chewed up mass of food ready to swallow |
| cardiac sphincter | opening to the stomach |
| chyme | thick liquid formed in stomach consisting of digestive juices and partially digested food |
| concretions | compact mass of mineral matter |
| diarrhea | condition when insufficient water is removed from feces, resulting in soft, watery, and frequent evacuation |
| enzymes | large protein molecules that are a catalyst to carry out chemical reactions |
| epiglottis | small flap of cartilage in the pharynx that closes the top of the trachea during swallowing |
| esophagus | foot long tube connecting mouth to stomach |
| feces | undigested waste materials from digestive process |
| gall bladder | saclike organ storing bile |
| ingestion | Eating |
| large intestine | Absorbs water and makes feces |
| liver | functions as body’s chemical factory; produces bile, filters blood; stores glycogen, vitamins, minerals, and reserve blood |
| microvilli | fine extensions of cell membrane on epithelial cells of small intestine |
| pancreas | Makes enzymes for digestion |
| pepsin | digestive enzyme produced by stomach |
| peristalsis | rhythmic wave of muscular contractions that move food through digestive tract |
| pyloric valve | Opening from stomach to small intestine |
| rectum | section of large intestine that stores solid waste until it is expelled |
| salivary glands | six digestive glands in the mouth that secrete saliva |
| small intestine | long, tubular organ of digestion and absorption |
| stomach | muscular digestive organ that mixes food with digestive juices |
| villi | tiny hairlike projections that increase the surface area of the small intestine and absorb digested food |