Question

multiple choice 2 points

the choroid plexuses are formed from blood vessels and specialized neuroglial cells called
schwann cells
ependymal cells
oligodendrocytes
astrocytes

Explanation:

Identify the function of choroid plexuses

Using the Neuroglia Functions knowledge point
The choroid plexuses are specialized vascular structures located within the ventricles of the brain that produce cerebrospinal fluid (CSF).

Analyze the role of ependymal cells

Ependymal cells are a type of neuroglia that line the ventricles of the brain and the central canal of the spinal cord. In the choroid plexuses, specialized cuboidal ependymal cells cover the capillaries to form a selective barrier that filters blood plasma to secrete CSF.

Evaluate the other options

• Schwann cells: Myelinate axons in the peripheral nervous system.
• Oligodendrocytes: Myelinate axons in the central nervous system.
• Astrocytes: Form the blood-brain barrier and regulate the chemical environment.

Answer:

• schwann cells
• ependymal cells (Correct answer)
• oligodendrocytes
• astrocytes