Lesson 3B (Part 2) Flashcards
What are 6 liver structures?
- Portal veins
- Hepatic veins
- Hepatic arteries
- Hepatic ducts
- Ligaments
- Fissures
What do portal veins do?
Return nutrient rich (oxygen poor) blood from the spleen, pancreas and intestines
What does the hepatic artery do?
Supplies oxygen rich (nutrient poor) blood to the liver from the celiac trunk/aorta
What do the hepatic ducts carry?
Bile
What do ligaments do in the liver? (2)
- They secure it
2. Support it
What are fissures?
Anatomical divisions
What does the liver receive?
Receives and takes up nutrients and other molecules that are absorbed from the intestines before the blood is returned to the heart via the IVC
What percentage does the portal vein take up?
75%
What percentage does the hepatic artery take up?
25%
What happens in hepatic veins? (2)
- Blood from the portal veins and hepatic arteries mix as they travel though the liver sinusoids/lobules
- This blood gets picked up by the hepatic veins before returning to the heart via the IVC
What is an excocrine secretory product of the liver?
Bile
Where is bile stored?
In the gallbladder
Where is bile released during digestion?
Into the duodenum via the cystic duct
What does bile help with?
The digestions of fats
What makes up the portal triad? (3)
- Portal vein
- Hepatic artery
- Bile duct
What happens to the bile when blood comes out of the liver?
Bile goes in
- they move in opposite directions
What divides the liver into superior and inferior portions?
Portal veins
What are the 2 main lobes of the liver?
- Left lobe
2. Right lobe
What are the 2 ways the left and right lobe are divided?
- Main Lobar Fissure
- surgically - Falciform Ligament
- anatomically
What is another word for main lobular fissure?
Cantlie’s Line
Where does the Cantlie’s line divide from?
IVC to the gall bladder
Where does the falciform ligament divide?
Middle of the left lobe
How is the left lobe divided
Medially and laterally
How is the right lobe divided?
Anteriorly and posteriorly
What are 2 lobes you can see on the visceral surface?
- Caudate lobe
2. Quadrate lobe
Where is the caudate lobe located? (3)
- Medial to the IVC
- Lateral to the left lobe
- Posterior to the porta hepatis
Where is the quadrate lobe located? (3)
- Anterior to the porta hepatis
- Medial to the gall bladder
- Lateral to the fissure for the ligamentum teres
Whats a good way to remember that the quadrate lobe is on the anterior side?
It has the same amount of letters
- anterior vs quadrate
What structure is the left lobe closely related to?
The undersurface of the diaphragm
Where does the liver lay in reference to the pancreas, SV and SA?
Anteriorly
Which lobe is bigger?
The right lobe
Where does the right lobe lay close to?
The anterolateral abdominal wall
- along the right midaxillary line from 7th-11th ribs
Where is the right lobe in reference to the pancreatic head?
Lateral
