Questions: What type of glial cell provides myelin for the axons in the CNS? a oligodendrocyte b astrocyte c Schwann cell d satellite cell

The answer is the first one (a): oligodendrocyte.

Explanation for each option:

a) Oligodendrocyte - Correct. Oligodendrocytes are the type of glial cells responsible for providing myelin for axons in the central nervous system (CNS). They wrap around the axons to form the myelin sheath, which is essential for the proper functioning of the nervous system by facilitating rapid signal transmission.

b) Astrocyte - Incorrect. Astrocytes are another type of glial cell in the CNS, but they do not provide myelin. Instead, they have various functions, including supporting neurons, maintaining the blood-brain barrier, and regulating the extracellular ionic and chemical environment.

c) Schwann cell - Incorrect. Schwann cells provide myelin for axons, but they are found in the peripheral nervous system (PNS), not the CNS.

d) Satellite cell - Incorrect. Satellite cells are glial cells found in the peripheral nervous system. They surround neuron cell bodies within ganglia but do not provide myelin.

In summary, oligodendrocytes are the glial cells that provide myelin for axons in the CNS.