The Vertebrate (mostly human) Digestive System Mouth ...

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Accessory OrgansPancreas - at junction ofstomach and small intestineConnected via pancreatic ductHas both exocrine andendocrine functionsFluid contains proteases(trypsin and chymotrypsin)pancreatic amylase andfat digesting lipaseEnzymes released as inactive zymogens,activated by brush border enzymesFluid also contains bicarbonate to neutralize HClChyme in intestine becomes slightly alkaline
Pancreas is also an endocrine glandProduces hormones that regulate blood sugar levelProduced in islets of Langerhans clustered throughout pancreasMost important pancreatic hormones are insulin and glucagonInsulin - produced by β-cells -released in response to highblood sugarstimulates sugar uptake by liverand muscles - converted toglycogenGlucagon - produced by α-cells -released in response to lowblood sugarstimulates release of sugar fromliver - from stored glycogen
Page 1 and 2: The Vertebrate (mostly human) Diges
Page 3 and 4: The MouthThe teeth cut and grind fo
Page 5 and 6: EsophagusUpper 1/3 of esophagusenve
Page 7 and 8: Parietal cells secrete HCl and intr
Page 9 and 10: Small Intestineabout 6 m longcompos
Page 11 and 12: Accessory OrgansPancreasPancreas -
Page 13 and 14: Fats hydrolyzed into fattyacids and
Page 15 and 16: Large Intestine (colon)Has no diges
Page 17: The rectum - terminal portion of th
Page 21 and 22: Regulatory Functions of the LiverHe
Page 23: Passage of chyme from stomach inhib

The Vertebrate (mostly human) Digestive System Mouth ...

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