APPLIED RADIOLOGICAL ANATOMY

ANATOMY

CHEST AND CARDIOVASCULAR

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The Blood Brain Barrier is a network of ____ with overlapping cell membranes that form ____ junctions.
A
Arterioles & Loose
B
Arterioles & Tight
C
Capillaries & Loose
D
Capillaries & Tight
Explanation: 

Detailed explanation-1: -The blood-brain barrier is the barrier between the cerebral capillary blood and the interstitial fluid of the brain. It is made up of capillary endothelial cells and basement membrane, neuroglial membrane, and glial podocytes, i.e., projections of astrocytes.

Detailed explanation-2: -Endothelial Cells. At the BBB, they are closely associated with one another via tight junctions to form a barrier. These cellular junctions are crucial to the microvessels in our brains because they maintain the integrity and permeability of the vessel, thereby regulating passage through the BBB.

Detailed explanation-3: -The blood–brain barrier (BBB) is a highly complex and dynamic structure, mainly composed of brain microvascular endothelial cells (BMECs), pericytes, astrocytes and a non-cellular component-the basement membrane (BM).

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