Effectiveness of blood brain barrier is by: (A) Thick basement membrane, (B) Tight arrangement of astrocytes, (C) Tight endothelial function, (D) Microglial cell
Answer is C. The blood-brain barrier is formed by endothelial cells of the capillary wall, astrocyte end-feet ensheathing the capillary, and pericytes embedded in the capillary basement membrane. Ref: guyton and hall textbook of medical physiology 12 edition page number:671,672,673