Question

Which one of the following statements is applicable to satellite cells?

• A. These cells encircle PNS axons. They form the myelin sheath around the axons.
• B. These are the flat cells surrounding the cell bodies of neurons in PNS ganglia.
• C. These are cuboidal to columnar cells arranged in a single layer that possess microvilli and cilia.
• D. These are small cells with slender processes that give off numerous spinelike projections.

Hint:

Remember the two main glial cells of the PNS and their primary associations:

\textbf{Schwann Cells} \(\rightarrow\) \textbf{Axons} (myelination)
\textbf{Satellite Cells} \(\rightarrow\) \textbf{Cell bodies} (support in ganglia) \end{itemize}

Answer 1

The Correct Option is B

Step 1: Concept Overview:
Satellite cells, a type of glial cell in the peripheral nervous system (PNS), support and protect neurons. The question requires identifying the correct description of satellite cells.

Step 2: Explanation:
- Statement 1: Describes Schwann cells, which form the myelin sheath around axons in the PNS.
- Statement 2: Correctly defines satellite cells as flat cells surrounding neuron cell bodies (soma) in PNS ganglia. They offer structural support and regulate the neuronal chemical environment.
- Statement 3: Describes epithelial tissue, not a glial cell.
- Statement 4: Describes microglia, the immune cells of the central nervous system (CNS).

Step 3: Conclusion:
The accurate description of satellite cells is that they are flat cells around neuronal cell bodies in PNS ganglia; therefore, option (B) is correct.