Compared with the Myelin Found on Small Diameter Axons, the Myelin

question 100

Multiple Choice

 Compared with the myelin found on small diameter axons, the myelin coating axons of large diameter axons

• A) is of equal thickness and spacing.
• B) has less thickness but equal spacing.
• C) has equal thickness, but the nodes of Ranvier are closer together.
• D) is thicker, and the nodes of Ranvier are farther apart.

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Definitions:

P Wave

A feature of the ECG that represents the electrical activity associated with the depolarization of the atria of the heart.

Atrial Depolarization

The electrical activation of atrial myocardium (heart muscle) that leads to the contraction of the atria, marked as the P wave on an electrocardiogram (ECG).

Electrocardiogram

A diagnostic test that measures the electrical activity of the heart to identify various heart conditions.

Semilunar Valves

Valves located at the exits of the heart, preventing blood from flowing back into the ventricles from the arteries.