Please I need quick response! Bonus points ! DETAILS explanation with any equati
ID: 54028 • Letter: P
Question
Please I need quick response! Bonus points ! DETAILS explanation with any equation much apreciated
In an action potentia in myelinated fibers, the conduction velocity is proportional to the diameter of axon (meaning it increases or decreaes in relation to one another). In unmyelinated fibers it is approx. proportional to square root of diameter. With info above, describe benefit of myelination in term of required space when transferingg action potential at a speed given. As axon diameter & distance traveled decreases, at what point would benefit of myelination not apply likely? Based on relationships given above, why is myelination not much useful for axons traveling short distances? Writing relationships from info in this problem will be helpful.
Explanation / Answer
Before looking into the benefits and non-benefits of myelin sheet, let’s know about the difference between the functions of myelin and non-myelin sheet.
In non-myelin sheet, the local current must depolarize each and every area of the membrane, which is really time-consuming process. Due to these many restrictions on conduction of velocity gets delayed. Whereas, the myelinated neurons take an advantage in enabling them to conduct impulses with higher velocity, as the local currents does not need to be depolarized every time.
In addition, the impulse can spread only to a short distance, before passing through the membrane, which need slight depolarization. So, passing of impulses for shorter distances, myelinated neurons are not beneficial for short distances. Instead, non-myelinated neurons would be helpful, as they depolarize locally and frequently.