What is described about Ependymal cells in the CNS?

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Study for the Galen Anatomy and Physiology (AandP) 1 Theory Exam 2. Gain confidence with flashcards, pinpoint areas needing focus, and strengthen understanding through detailed explanations. Excel in your exam with comprehensive preparation!

Multiple Choice

What is described about Ependymal cells in the CNS?

Explanation:
Ependymal cells line the internal cavities of the CNS—the ventricles and the central canal—and in the choroid plexus they form the secretory epithelium that produces cerebrospinal fluid (CSF) and helps circulate it with their cilia. They are not responsible for forming the blood-brain barrier; that barrier comes from tight junctions between CNS capillary endothelial cells, reinforced by astrocyte endfeet. So the best description of these cells is their association with CSF production and movement within the ventricular system, rather than forming the BBB.

Ependymal cells line the internal cavities of the CNS—the ventricles and the central canal—and in the choroid plexus they form the secretory epithelium that produces cerebrospinal fluid (CSF) and helps circulate it with their cilia. They are not responsible for forming the blood-brain barrier; that barrier comes from tight junctions between CNS capillary endothelial cells, reinforced by astrocyte endfeet. So the best description of these cells is their association with CSF production and movement within the ventricular system, rather than forming the BBB.

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