An elderly patient is seen by his gerontologist and asks what the blood-brain barrier is and why certain drugs cannot enter the neural tissue. The physician explains that the principal anatomic structure that creates that barrier is the

Question

Quizplus · Accepted Answer

The blood-brain barrier is primarily made up of specialized endothelial cells that have tight intercellular junctions which restrict the passage of certain drugs and molecules into the brain tissue.

An Elderly Patient Is Seen by His Gerontologist and Asks