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digestion notes questions
Terms in this set (19)
Secretes digestive enzyme and those include amylases, lipase's that digest fats and proteases. Scretion come down pancreatic duct into small intestines once they enter the small intestine the enterokinase can activate these proteases so they're active once in small intestine. leo secretes sodium bicarbonate
A hormone that controls entry of food. As there is entry of chyme in the stomach that drives down the pH. Increased gastric entry causes a drop of pH in the small intestine causing the small intestine to increase secretin. Secretin causes the stomach to decrease gastric emptying and promote decreased release of HCl. Pancrease will increase bicarbonate which will increase pH in small intestine and stomach will decrease gastric emptying.
found in the pancreas; release insulin
found in pancreas; release glucagon
Released by beta cells; a hormone associated with the absorptive phase. If we have a rise in blood glucose levels, that would trigger an increase in the release of insulin and that promotes increased glucose used by general tissues in body, increase conversion of glucose to glycogen, increased conversion of glucose to fats and increased fat uptake storage by fat cells, also causes this in the muscles/liver, promotes increased amino acid uptake and proteins synthesis in cells through out the body
Released by alpha cells; associated with post-absorptive phase. High levels of glucose leas to low levels of glucagon. Decreased glucose causes an increase in glucagon which causes an increase of glycogenolysis and gluconeogenesis
Breaking down glycogen to glucose
Making glucose from amino acid precursors
Driven by parasympathetic system. Contains amylase which helps digest complex carbohydrates
pinched off region of stomach to small intestine
keeps stomach contents contained
produced by liver and stored in gall bladder its purpose is to help digest fats
manufacture protons from CO2. Taking CO2 and making bicarbonate and protons. The bicarbonate leads on the basolateral side where protons leave on the apical side and Cl- leaves from basal to apical based on charge gradient.
A protease secreted by chief cells
Protects wall of stomach from pepsin and HCl. Secreted by goblet cells
A hormone promoted and controlled by digestive activities. Promotes contraction of gall bladder which promotes bile release and release of enzymes by the pancreas. Triggered by increased levels of fats and proteins into small intestine.
bacterial fauna in large intestine
Provide useful nutrients (e.g., fatty acids and vitamins); absorption; inc/dec levels of inflammation; influence metabolism
the tough outer layer of the main GI tract
activate proteases in the small intestine after proteases leave the pancreatic duct
THIS SET IS OFTEN IN FOLDERS WITH...
BIO 449: Blood Pressure, Gas, and pH Regulation
BIO 449: Digestion
BIO 449: Immunology
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