5- liver and biliary system Flashcards
does bile contain digestive enzymes
no but it contains bile acids that help break down fats
is the liver essential for life
yes
is the gallbladder essential for life
nope
what are the roles of endothelial cells in the liver
they line the sinusoids, fenestrated
what do bile acids do
help dissolve fats
how and where are bile acids synthesized
in the hepatocyte from cholesterol
how does pancreatic lipase work
only on surface of lipid droplets, it is water soluble
how does bile acids help pancreatic lipase
bile acids emulsify it so that pancreatic lipase can work
what forms micelles
bile acids
what are micelles
store fatty acids and monoglycerides, unstable
what is the function of micelles
holds fatty acids and monoglycerides and releases them to diffuse into enterocytes
what do hepatocytes do
produce and secrete bile acids, phospholipids and cholesterol into bile canaliculi with 1ary active transport
what does the gall bladder do
stores and concentrates the bile between meals
what is enterohepatic circulation
recycling of bile acids
how does enterohepatic circulation work
- bile released into duodenum
- absorbed in ileum into portal circulation
- transported back into hepatocytes
