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Home Forums IMAT Exam IMAT – Problem Solving and Discussion Does the axon length increase the speed of transmittion in a nerve?

  • Does the axon length increase the speed of transmittion in a nerve?

  • Rom Hap

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    June 19, 2021 at 9:28 am
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    i know that the diameter, and the myelin sheath are big factors in speed.

    but does length also?

  • Ari Horesh

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    June 19, 2021 at 10:12 am
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    Hey, it doesn’t affect the speed, and if it does, it’s negligible.

    The reason length does not really matter is because nodes of Ranvier continually “refresh” the signal strength during propagation at the same rate. At the same time, the diameter and the myelination have a direct impact on the leakage of the ions and therefore increase the speed of conduction.

    I hope it makes sense.

  • Rom Hap

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    June 19, 2021 at 10:17 am
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    • This reply was modified 1 month, 1 week ago by  Rom Hap.
    • Rom Hap

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      June 19, 2021 at 10:19 am
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      Yes thanks so much! In the question I added above I guess they counted length as negligible factor only right?

      • Ari Horesh

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        June 19, 2021 at 11:09 am
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        Yes 🙂
        Don’t forget to click “accept” to accept my answer as the correct one

      • Rom Hap

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        June 19, 2021 at 11:29 am
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        Thank you ari 🙂

        Ari Horesh voted up
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