Review Questions 2025/2026 Exam All
Answers and Illustrations Given
from which vascular beds do the hepatic central veins derive their blood flow? - 🧠
ANSWER ✔✔portal vein and hepatic artery
blood flow: portal vein/hepatic artery -> central vein -> hepatic vein -> inferior
vena cava
what cell types make up the liver, and what are their distinguishing characteristics?
- 🧠 ANSWER ✔✔hepatocytes: metabolism
cholangiocytes: line the bile duct, secretion
kupffer cells: phagocytosis of pathogens and particles (dead cells)
, stellate cells: storage of vit A
sinusoidal endothelial cells: filtering system
what is the difference between the lobule concept and the acinus concept of the
liver sub-architecture? - 🧠 ANSWER ✔✔lobule
•anatomical unit of the liver in hexagonal shape
•central structure is central vein and the periphery is delineated by portal tracts
acinus
•functional unit of the liver
•divided into 3 zones
what are some physiological consequences of functional zonation in the liver? - 🧠
ANSWER ✔✔increase in metabolic efficiency
what activities are found in zone 1 hepatocytes? in zone 3 hepatocytes? - 🧠
ANSWER ✔✔zone 1
•oxidative metabolism
•gluconeogenesis