5.1.2b The Liver Flashcards
What does the hepatic portal vein do?
takes blood from small intestine to liver
What is the blood in the hepatic portal vein?
rich in nutrients and deoxygenated
Through which blood vessel does the liver recieve oxygenated blood
hepatic arteryT
Through which blood vessel does the liver return deoxygentaed blood to the heart
hepatic vein
Liver cells
hepatocytes
Vessels that the hepatic portal vein divides into
sinusoids
Differences of sinusoids compared to capillaries
walls more porous, composed ofone later of very thin cells with many pores between them, no basement membrane and wider lumen to slow blood flow
Kupffer cells
macrophages in the sinusoids which ingest pathogens
What do hepatocytes secrete
bile
What does the gallbladder do
store and release bile into the duodenum
lobule
hexagonal clusters of hepatocytes
Function of bile canaliculus
vessel to flow bile from hepatocytes to bile duct
Functions of the liver (according to OCR)
storage of glycogen, detoxification, formation of urea from ammonia
Glycogenesis
conversion of glucose into glycogen
How is the liver triggered to start glycogenesis
Detects insulin secreted by the pancreas after it detects an increase in blood glucose concentration
