Create an account
muscle between the esophagus and stomach, prevents acidic gastric juices from flowing up into esophagus
located between stomach and small intestine, controls the movement of partially, digested food.
first part of small intestines, most digestion takes place, chemicals released from liver, gall bladder, and pancreas
Ring of muscles that are between the ileum and the cecum (first part of the large intestine)
receives and eliminates waste products from small intestines, absorbs water from remaining bolus
secretes pancreatic juice into the duodenum, where it mixes with bile to digest food; also produces sodium bicarbonate, a base that neutralizes stomach acid
released in stomach, reacts with HCl to create pepsin
The inactive form of pepsin that is first secreted by specialized (chief) cells located in gastric pits of the stomach.
The breakdown of complex organic molecules into smaller components by physical and chemical means
Protein digestion - turns proteins into small polypeptides
Also: an enzyme present in gastric juice that begins the hydrolysis of proteins in the stomach
Enzyme that breaks down fat droplets (emulsified) into: glycerol, fatty acids, and glycerides
Carbohydrate digestion - turns polysaccharides (starch, glycogen) into smaller polysaccharides (maltose)
Made in the pancreas, _______ turns small polypeptides (once protein) into smaller polypeptides in the lumen of sm. int.
Made in the pancreas, and activated by trypsin, _______ also turns small polypeptides (once protein) into smaller polypeptides in the lumen of sm. int.
forms a bolus (ball) out of the chewed food + pushes it to the back of the mouth into the pharynx
where digestive fluids are added and most of the chemical digestion occurs
why is the duodenum important?
absorbs nutrients into the bloodstream; folds in small intestine that make larger area for food absorption into the blood
produce digestive enzymes that break down cellulose; unable to in humans b/c we have a tiny ______
Nucleic acid digestion - turn nucleosides into: nitrogenous bases, sugar, and phosphates
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together