What is my answer?
What is the correct answer?
I am am wrong, what was my error?
THUS: Find the truth
What is the least amount of work I can do so I can get out of here.
Today and Now I will do something for my future self.
As I receive questions, I will add some notes here to clarify. Go down to see the content.
Arteries, veins and bile ducts
Arteries has small round lumens, with relatively thick walls.
Veins has large irregular lumens, with relatively thin walls.
Both have endothelium, but it bulges more in arteries.
If you see distinct cuboidal epithelium, it is most likely a bile duct.
Portal vein vs Central vein
The portal vein is part of the portal triad. It has an associated artery and bile duct. The central vein has no other structures around it, and the endothelium is indistinct. You can most the times also see the sinusoids opening up into the central vein.