structure and function of liver Flashcards
What are the parenchymal cells of the liver
Parenchymal cells - cells that do most of the function of the organ
hepatocytes for the liver
What are liver sinusoids
Blood capillaries of the liver
What cells in the liver produce bile
Cholangiocytes
What are stellate cells
Vit A storage cells
What are Kupffer cells
Liver macrophages that fight off foreign bodies in the liver
What does the portal vein carry
Deoxygenated blood to the liver but also many nutrients
What does the hepatic artery carry
Highly oxygenated blood
What is the composition of blood in the liver
25% hepatic artery
75% portal vein
What does the portal triad contain
portal vein
Bile duct
Hepatic artery
What is the flow of blood in the hepatic lobule
Flow of blood from the portal triad to the central vein while the flow of bile goes the opposite direction
How does billirubin get to the liver to be put in bile
It is formed in the spleen as a breakdown product of haemoglobin and then transported to the liver
Describe how bile is reabsorbed by the body
Liver > bile duct > duodenum > ileum > hepatic portal vein > liver
What is the function of the gallbladder
Stores and concentrates bile
What does CCK do to the gallbladder
Causes contraction of the gall bladder and therefore secretion of bile
Describe CCKs role in digestion of fat
fat in duodenum causes CCK to relax the sphincter of Oddi and contract the gall bladder
CCK causes pancreatic enzyme secretion and bile secretion which leads to the fat digestion
