Following Are Events That Occur During the Cardiac Cycle

question 19

Multiple Choice

Following are events that occur during the cardiac cycle.
1) Ventricular pressure increases and exceeds pressure in the arteries.
2) Ventricles fill passively.
3) Atrial relaxation begins.
4) Atrial contraction forces a small amount of additional blood into relaxed ventricles.
5) Pressure in ventricles drops and blood flows back against cusps of semilunar valves, forcing them closed.
6) Ventricular contraction pushes AV valves closed.
Choose the correct order of events in the cardiac cycle.

• A) 4, 6, 3, 1, 2, 5
• B) 2, 6, 1, 4, 3, 5
• C) 3, 6, 1, 5, 4, 2
• D) 2, 5, 1, 6, 3, 4
• E) 4, 3, 6, 1, 5, 2

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Definitions:

Fat-Soluble Vitamins

Vitamins, such as A, D, E, and K, that can be stored in the body's fatty tissue and liver.

White Blood Cell Count

A test measuring the number of white blood cells in the blood, indicating the body's immune system activity.

Below Normal

Indicative of measurements or conditions that are less than the typical or expected standard.

Immunity

The ability of an organism to resist a particular infection or toxin by the action of specific antibodies or sensitized white blood cells.