digestive glands Flashcards
1
Q
the liver and pancreas are derived from
A
endoderm
2
Q
the pancreas characteristics
A
- retroperitoneal
- secretes insulin and glucagon
- contains islets of langerhans
- centroacinar and intercalated duct cells secrete carbonate rich fluid
3
Q
the pancreas has same ducts as the salivary glands except
A
- it contains centroacinar cells
- has no striated ducts or myoepithelial cells
4
Q
the pancreas is
A
a major exocrine gland of digestive tract with well developed acinar duct system
5
Q
gherilin is one of the hormones that stimulates
A
hunger
6
Q
the liver
A
- the largest internal organ
- 4 lobes
- covered in capsule and mesothelium
- major interface between blood and digestive system
7
Q
main function of the liver
A
- production of bile
- hydrolysis
- uptake of fats in duodenum
8
Q
the lobes of the liver
A
- the right lobe
- the left lobe
- the caudate lobe
- the quadrate lobe
9
Q
the hepatic venous portal system
A
- hepatic arteries bring oxygen and nutrients to liver
- blood flows through sinusoidal capillaries in the portal triad of the hepatic lobules
- central veins of lobules merges together and drain blood via the hepatic vein
10
Q
hepatocytes
A
- key cells of liver
- functionally diverse cells
11
Q
function of hepatocytes
A
- exocrine function
- secretion of bile components
- synthesis and endocrine secretion into blood of plasma proteins
- gluconeogenesis
- detoxification
- deamination (urea production)
- glucose storage
- iron storage
- vitamin A storage
- removal of erythrocytes by Kupffer cells
12
Q
the hepatic lobule
A
- blood drainage
- always contains a portal triad
- drains blood from the portal vein and hepatic artery to the hepatic or central vein
- hepatocytes have an endocrine function here as blood flows past them
13
Q
the portal triad
A
contains a bile duct, hepatic arteriole, and portal vein
14
Q
the portal lobule
A
- drains bile from hepatocytes to the bile duct
- hepatocytes have an exocrine function here
- drain in a triangular form to the bile
15
Q
hepatic acini
A
- oxygenation of hepatocytes
- organization for oxygenation of hepatocytes
- most oxygenated near portal triads (hepatic arteriole supplies blood)
- least oxygenated at central vein
