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DAT ch 11 Word Scramble

 
 



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DAT ch 11

bio- digestion coursesaver notes

QuestionAnswer
pharynx where food and air passages cross
Salivary Amylase enzyme in saliva which hyrdrolyzes starch to maltose (disaccharide)
Goblet Cells specialized epithelial cells that secrete mucus
Stomach churning produces acidic semi-fluid mixture called chyme; secretes pepsin and HCl (activates certain proteins and kills bacteria)
Pepsin protein hydrolyzing enzyme; secreted by chief cells
parietal cells secrete HCL, intrinsic factor (B-12 absorption)
Cholecytoskinin (CCK) hormone made by cells of duodenum, stimulates bile release
Enterogastrone produced in the duodenum; inhibits stomach gland secretion and slows stomach’s muscular movement when fatty food is in the intestine (more time for digestion)
G-cells secrete the hormone gastrin which stimulate the HCL production of parietal cells; innervated by vagus nerve, found w/i gastric glands of stomach
Mucus protects stomach from acidic environment (pH = 2)
Small Intestine chemical digestion completed here; duodenum, jejunum, ileum; villi are used for absorption (contain capillaries and lacteals) / active absorption (glucose, AA) and passive
Most digestion done in duodenum  secretes secretin causes pancreas to secrete buffer (HCO3- )- secretions of intestinal glands, pancreas, liver and gall bladder mix
Intestinal mucosa secretes lipases (fat digestion), aminopeptidases (polypeptide digestion), and disacchiridases (breakdown of maltose, lactose, sucrose)
Portal vein directs glucose and other monosaccharides to the liver from the intestinal tract
Liver albumin synthesis, bile production, destruction of worn-out old red blood cells, converts nitrogenous waste into urea, glycogen storage
Bile emulsifies fat; contains no enzymes; exposes greater surface area of fat to lipases
Pancreas produces amylase (carb digestion), trypsin (protein digestion), and lipase (fat digestion); secretes BICARBONATE juice that neutralizes chime
Large Intestine (colon) functions in absorption of salts/ water not absorbed by small intestine ‑Bacteria in large intestine = main source of vitamin K
Created by: xeenie on 2011-09-04



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