This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Kupffer cells in the liver are: March 2008 
Select and explain. 
A. Endothelial cells, B. Secretory cells, C. Phagocytic cells, D. Phagocytic cells
C: Phagocytic cells
Answer: C: Phagocytic cells 
Explanation: Ans. C: Phagocytic cellsIn each hepatic lobule, the plates of hepatic cells are usually only one cell thick. Large gaps occur between the endothelial cells, and plasma is in intimate contact with the cells. Hepatic aery blood also enters the sinusoids. The central veins coalesce to form the hepatic veins, which drain into the inferior vena cavaNumerous macrophages (Kupffer cells) are anchored to the endothelium of the sinusoids and project into the lumen.