Estimate the time it would take for such axons to carry a message from a foot stepping on a sharp object to the brain and then back to the foot. This calculation gives a rough prediction of human reaction time.

The Myelinated axons-fibers that are placed in an insulating myelin shealth.  

In myelinated axons, charges interchange through the membrane that happens to move between nodes By knowing how quickly the wall (membrane and sheath) of axon part between these bulge tins be electrically charged and discharged by changes in membrane potential at one node, we estimate the haste of tendon impulses along the axon.

Explanation:

The axons use an active direction 1 um (10 m) Myelinated courage axon Insulating myelin cover 10 um (10m) conducts  axoplasm 1 mm node differentiation Evenly spaced bulge of Ranvier of levy transfer across the membrana to create an action potential that continually amplifies and replenishes clectrical signals traveling along the axons

answer:

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