Viewing All Flashcards for Digestive System
Peristalsis (wave-like contractions of smooth muscle)
A sponge (phylum Porifera)
Carbohydrate digestion - mouthprotein digestion - stomach fat digestion - small intestine (lumen)
The folding of the villi and microvilli increases the absorptive surface area of the small intestine substantially, resulting in more efficient absorption of nutrients.
When blood glucose level rises.
Increases the blood glucose level. (the opposite of insulin)
A hormone produced by adipose(fat tissue). It surppresses appetite as its level increases. It increases appetite as its level decreases.
Vitamin B complex and vitamin C
Contraction by smooth muscles in the wall of the canal, which pushes the food along the tract.
Ring like valves which close off the tube like drawstrings, regulating the passage of material between chambers of the digestive canal.
Saliva contains glycoprotien called mucin which protects the lining of the mouth from abrasion, lubricates food for easier swallowing, helps prevent tooth decay, kills many of the bacteria that enters the mouth and salvary amylase(an enzyme) which hydroliyzes starch and glycogen.
Bile is produced by the liver and stored in the gall bladder.
In the duodenum of the small Intestine.
More surface area for absorption of nutrients.
It functions as a fermentation chamber where symbiotic bacteria convert the shredded leaves into more nutritious diet. Their feces are more nutritious and they can consume it again.
A primary mechanism of homeostasis that monitors physiological changes and triggers a response that counteracts the change.
Found in the small intestine to increase the surface area for the absorption of nutrients.
Duodenum (the first section of the small intestine)
The liver produces bile and sends it to the gall bladder. The gall bladder releases the bile into the duodenum when fats are eaten.
Lipase which is produced by the pancreas
Physical digestion by teethchemical digestion of starch only by amylase
Digestion of food into molecular components followed by the absorption of those molecules into the blood stream.
The products of fat breakdown
The liver; which then regulates the amount of each nutrient in the blood.
Absorb waterremoves indigestible materials (feces/wastes) - called defecationhouses some mutualistic bacteria that produce a few vitamins (K,B12)
Pancreas releases it into th duodenum to neutralize acid coming from the stomach
Enzymes that breakdown proteins
Lipase (fats); amylase (starch); nucleases (nucleic acids); proteases (proteins)
Hepatic portal vein carries blood from the _small intestine___ to the_liver___.