If L = Load, F = Fulcrum, and E =

question 71

Multiple Choice

If L = load, F = fulcrum, and E = effort, what type of lever system is described as LEF?

• A) first-class lever
• B) second-class lever
• C) third-class lever
• D) fourth-class lever

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Definitions:

Endocardium

The innermost lining of the heart's chambers and valves, composed of a layer of endothelial cells that provides a smooth surface for blood flow within the heart.

Cardiac Arrest

A sudden loss of heart function, breathing, and consciousness, typically resulting from an electrical disturbance in the heart.

Bundle Of His

A collection of heart muscle cells specialized for electrical conduction that transmits electrical impulses from the atrioventricular node to the ventricles of the heart.

AV Bundle

The atrioventricular bundle, or Bundle of His, is a collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node to the point of the apex of the fascicular branches.