Nerve impulses move at a rate of approximately 300 feet per second on myelinated neurons and 3 feet per second on unmyelinated neurons.
If a 6 foot-tall woman steps on a tack, how long will it take for that information to travel to her brain on (a) myelinated neurons, and (b) unmyelinated neurons. (Picture 3)
A) (a) myelinated: 2 seconds
(b) unmyelinated: 50 seconds
B) (a) myelinated: 2 seconds
(b) unmyelinated: 0.02 seconds
C) (a) myelinated: 0.02 seconds
(b) unmyelinated: 2 seconds
D) (a) myelinated: 50 seconds
(b) unmyelinated: 2 seconds

Answer :

If a 6 foot-tall woman steps on a tack, it will take for that information to travel to her brain on:

(a) myelinated: 0.02 seconds

(b) unmyelinated: 2 seconds

What is Myelination?
Formed around nerves, particularly those in the brain and spinal cord, myelin serves as an insulating coating or sheath. It is composed of fatty and protein components. Electrical impulses may move swiftly and effectively along nerve cells because to its myelin layer. These impulses become slower if myelin is compromised.

In a manner comparable to the insulation found surrounding the wires in electrical circuits, myelin, a membraneous coating created by glial cells around axons, serves as an insulator. The transmission of signals between neurons can be greatly sped up by this "myelination" process (known as action potentials).

Therefore, Option C is correct.

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