Question

multiple choice 2 points
which glial cell is found wrapped around axons in the pns?
o oligodendrocytes
o nodes of ranvier
o ependymal cells
o satellite cells
o schwann cells

Explanation:

Identify the target nervous system division

Using the Glial Cells knowledge point
The question asks for a glial cell wrapped around axons specifically in the Peripheral Nervous System (PNS).

Analyze the role of myelination in different divisions

Using the Myelination knowledge point

• Oligodendrocytes form myelin sheaths around axons in the Central Nervous System (CNS).
• Schwann cells form myelin sheaths around axons in the Peripheral Nervous System (PNS).

Evaluate the remaining options

• Nodes of Ranvier are gaps in the myelin sheath, not glial cells.
• Ependymal cells line the ventricles of the brain and central canal of the spinal cord (CNS).
• Satellite cells surround neuron cell bodies in sensory and autonomic ganglia (PNS), but are not wrapped around axons to form myelin.

Select the correct option

Schwann cells are the glial cells responsible for wrapping around axons to form the myelin sheath in the PNS.

Answer:

• Oligodendrocytes
• Nodes of Ranvier
• Ependymal cells
• Satellite cells
• Schwann cells (Correct answer)