Structure and Functions of Cells of the Nervous System - Cells of the Nervous System - The Blood-brain Barrier

3 important questions on Structure and Functions of Cells of the Nervous System - Cells of the Nervous System - The Blood-brain Barrier

What are the features of the blood-brain barrier?

The blood-brain barrier separates the circulating blood from the brain and extracellular fluid in the CNS. It is selectively permeable.

What is the function of the blood-brain barrier?

The presence of the blood-brain barrier makes it easier to regulate the composition of the extracellular fluid. This way it prevents the transmission of messages from being disrupted.

What is the function of the blood-brain barrier in the area postrema?

The area postrema controls vomiting. Here the blood-brain barrier is more permeable, permitting neurons in this region to detect the presence of toxic substances in the blood.

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