Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
essential nutrients
|
required by cells and must be obtained from dietary sources, four types:
essential amino acids essential fatty acids vitamins minerals |
|
|
undernourishment
|
the result of a diet that consistently supplies less chemical energy than the body requires
|
|
|
malnourishment
|
the long term absence from the diet of one or more essential nutrients
|
|
|
ingestion
|
the act of eating
four types: suspension feeders substrate feeders fluid feeders bulk feeders |
|
|
digestion
|
the process of breaking food down into molecules small enough to absorb
|
|
|
absorption
|
uptake of nutrients by body cells
|
|
|
elimination
|
the passage of undigested material out of the digestive compartment
|
|
|
peristalsis
|
food is pushed along by this, rhythmic contractions of muscles in the wall of the canal
|
|
|
sphincters
|
valves that regulate the movement of material between compartments
|
|
|
small intestine
|
the longest section of the alimentary canal and the major organ of digestion and absorbtion
|
|
|
duodenum
|
the first portion of the small intestine is this where acid chyme from the stomach mixes with digestive juices from the pancreas, liver, gallbladder, and the small intestine itself
|
|
|
pancreas
|
this produces trypsin and chymotrypsin protein-digesting enzyme that are activated after entering the duodenum
|
