Lesson 9 Flashcards
What are 5 clinical indications for the liver?
- Fatty liver
- Mass
- Enlarge liver
- Liver function test
- blood work - General pain
What is the livers principle function? (6)
- Detoxification
- Metabolic breakdown
- Removal of old blood cells
- recycle iron - Secretes bile
- Stores several substances
- Production of important plasma proteins and hematopoiesis in fetal life
How much bile does the liver secrete everyday?
1/2 a pint
What substances does the liver store? (4)
- Vitamin A
- Vitamin B12
- Vitamin D
- Iron
What 3 different types of cells compose the liver?
- Hepatocytes
- Kupffer cells
- Biliary epithelial cells
What do hepatocytes do? (3)
- Detoxification
- metabolize - Form bile
- Store
What does bile do?
Aids in digestion of fats
Where is another place you can find kupffer cells?
In the spleen
What do kupffer cells do? (2)
- Immunity
2. Protects hepatocytes
What do biliary epithelial cells do?
Lines the biliary ducts
What kind of system is the hepatic circulation?
Dual blood supply system
- portal veins
- hepatic arteries
What % do portal veins provide of the blood supply?
70-80%
Do portal veins or hepatic arteries have a greater blood flow?
Portal vein
Why does the liver have a low incidence of infarction?
Due to dual blood supply
Infarction
Dying
- losing blood supply
What does the portal system transport?
Nutrients from the intestines to the liver
What does the liver do to the blood before it gets dumped into the systemic circulation?
It gets filtered
What are the size of hepatic arteries compared to the portal vein?
Smaller
What % of hepatic arteries make up the livers blood supply?
20-30%
What do hepatic arteries do?
Provides oxygen to the liver
What do ducts do in the liver?
Carry bile which helps in digestion
Where is the bile brought to after the liver?
To the duodenum
What makes up the portal triad? (3)
- Hepatic arteries
- Portal veins
- Hepatic ducts
Where does the portal triad enter the liver?
Porta hepatis
- doorway to the liver
What ligament wraps around the portal hepatis?
Hepatoduodenal ligament
What makes up mickeys face?
Main portal vein
What makes up mickeys left ear?
Common bile duct
What makes up mickeys right ear?
Proper hepatic artery
What does the main portal vein divide into? (2)
- Right portal vein
2. Left portal vein
What does the left portal vein branch into?
Medial and lateral branch of the left lobe
What does the right portal vein branch into?
Anterior and posterior branches of the right lobe
What is the size of the hepatic bile duct?
Under 2mm
What is the size of the common bile duct?
3mm
