Question
Which of the following is true with regards to this process illustrated in the diagram below?
| A. |
Action potential jumps between nodes – Saltatory Conduction is seen in in myelinated nerve fibers.
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| B. |
Membrane resistance & Capacitance are both greatly increased by myelination of axons.
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| C. |
Conduction velocity is increased by myelination
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| D. |
Both A & C
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Show Answer
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Correct Answer � D
Explanation
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Ans. D. Both A & C.
A. Action potential jumps between nodes – Saltatory Conduction is seen in in myelinated nerve fibers.C. Conduction velocity is increased by myelination.
- Membrane resistance (Rm) is increased by myelinization of axons.
- Membrane capacitance is greatly reduced by myelinization.
- Conduction velocity is increased by myelinization.
- The process of conduction by which the action potential jumps between nodes is known as “Saltatory Conduction”.
- It allows rapid propagation of the action potential despite small axon diameter
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