Some Nerves Are Myelinated,others Are Not

question 12

Essay

Some nerves are myelinated,others are not.Myelinated nerves send signals faster than unmyelinated neurons.Draw two neurons of equal length and wrap segments of myelin along one.Be careful to leave spaces for the nodes of Ranvier.Now,measure the exposed axons of each and total up the distance.Describe why the myelinated neurons send signals faster.

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Definitions:

Processing Delay

The time lag between the initiation and completion of a process, often seen in transaction processing or manufacturing operations.

Availability Delay

The lag between the deposit of a check and the moment the funds become available in the account.

Securities Trade

The buying and selling of financial instruments such as stocks, bonds, and mutual funds.

Fixed Cost

Costs that do not vary with the volume of output or sales, such as rent, salaries, and insurance premiums.