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11 Cards in this Set

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Describe the "large intestine" and what role it plays in digestion and absorption?
all digestion mostly finished. Every nutrient except H20 wrung out - now indegistible WASTE.
Good bacteria live here.
What role do bacteria play in our gut?
Mainly in large intestine. Bacteria is good, it produces vitamins, breaks down fiber (excreting gas as by-product).
Hydrachloric acid kills bad bacteria.
Describe the "small intestine" and what role it plays in digestion and absorption?
10 feet long.
MOST digestion happens here and ABSORBTION: nutrients absorbed in folds of intestinal wall and absorbed into circulatory system.
ACCESSORY GLAND secretions from "pancreas"(digestive enzymes), "gallbladder"(stores and concentrates bile which emulsifies fat)and intestine itself aids in digestion.
PERISTALSIS occurs also.
What is ABSORPTION
NUTRIENTS absorbed in folds of intestinal wall and absorbed into your circulatory system.
-Mostly in Small Intestine.
what is chyme?
a soupy mass created by stomache ready for small intestine
What are the goals of digestion and absorption?
our cells are alive, energy from food has to get to every cell in our body. Cells are the "building blocks" of our body. Cells need energy, oxygen, water, and building elements.
Describe the "Mouth" and what role it plays in digestion and absorption?
the mouth is one of the "digestive organs" (which food travels through). It helps with both CHEMICAL (salivary glands contain "amylase" for the breakdown of starches and saliva moistens and compacts food for swallowing)and MECHANICAL (chewing breaks down food to aid in digestion).
What is Feces?
All undigested waste. 30% is bacteria. Bacteria in colon are good.
What is the primary difference between the vascular system and the lymphatic system?
Most nutrients go through the vascular system.
VASCULAR(bloodstream):-nutrients from small intestine, go to vascular system to LIVER(processing place) to general circulation to CELLS.
LYMPHATIC(lymph-clear fluid): bypasses LIVER to general circulation.
Describe the "stomache" and what role it plays in digestion and absorption?
The stomache is one of the "digestive organs" which food travels through.
MECHANICAL DIGESTION includes "Peristalsis" begins here to act as a "food processor"
CHEMICAL DIGESTION includes enzymes, pepsin, and hydrachloric acid to break down food.
Food converts to CHYME here, ready for small intestine.
What is DIGESTION?
The breakdown of food.
1. starts with eyes and nose, stimulates other digestive processes.
2. mouth: chewing(doing alot of work for digestion) salivary glands(enzymes and moistens and compacts food for swallowing)
3. stomache
4. small intestine
5. large intestine
6. rectum