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BIO202-Ch23-Livr-gal
Bio202 - Ch 23 - Liver and Gallbladder - Marieb/Hoehn - Rio Salado - AZ
Question | Answer |
---|---|
Digestive function of liver | Produces bile (fat emulsifier) |
4 lobes of the liver | right,left,quadrate,caudate |
gallbaldder | stores and concentrates bile salts |
bile | alkaline: yellow-green fluid containing bile salts, pigments, cholesterol, phospolipids, triglycerides & phospholipids - emulsifies fats & aids in digestion |
Digestive function of liver | Produces bile (fat emulsifier) |
What in bile aids digestion? | Bile salts & phospholipids |
Bile salts do what? | Emulsify fats & facilitate absorption |
Enterohepatic circulation | Recycling mechanism for bile salts |
The __ is a remnant of fetal umbilicle vein on liver. | ligamentum teres (round ligament) |
Where does bile leave liver? | Common hepatic duct |
Where does bile leave gallbladder? | Cystic duct |
The common hepatic duct & cystic duct fused to form __. | the bile duct |
Functional units of liver are? | Liver lobules - plates of hepatocytes (liver cells) |
Blood percolates from __ regions of liver through the sinusoids & empties into __. | portal triads - central vein |
Kupffer cells | Hepatic macrophages that remove debris, bacteria, & old RBCs from blood. |
The hepatocytes of liver produce __ & do what? | bile - store glucose as glycogen & fat soluble vitamins & detoxify body |
Hep B is spread how? | IV, sex, etc. |
Hep A is spread how? | Sewage - contamination & feces - common in restaurants |
Roll of gallbladder | Stores concentrated bile from liver & releases when needed through its cystic duct. |
The major stimulus for gallbladder contraction is __. | cholecystokinin (CCK) - intestinal hormone released when acidic, fatty chyme enters duodenum. |
CCK stimulates? | Gallbladder to contract, pancreatic juice secretion, & relaxes hepatopancreatic sphincter. |
gallstones | Biliar calculi - obstruct flow of bile - sharp crystals due to too much cholesterol or too few bile salts. |