Question

The nodes of Ranvier are present in _____ cells.

• A. Cardiac
• B. Kidney
• C. Nerve
• D. Pancreatic

Hint:

Nodes of Ranvier are the "speed bumps" that actually help nerve signals go faster.

Answer 1

The Correct Option is C

Step 1: Concept
Nerve cells or neurons have specialized structures to facilitate the rapid transmission of electrical impulses.

Step 2: Meaning
The nodes of Ranvier are periodic gaps in the insulating myelin sheath on the axon of certain neurons.

Step 3: Analysis
These gaps allow for saltatory conduction, where the action potential "jumps" from node to node, increasing signal speed. Such structures are not found in cardiac, kidney, or pancreatic tissues.

Step 4: Conclusion
Nodes of Ranvier are unique and essential components of nerve cells.

Final Answer: (C)