What Is the Cardiac Cycle

question 41

Multiple Choice

What is the cardiac cycle?

• A) The movement of blood from systemic to pulmonary circulation
• B) The alternating relaxation and contraction of the heart chambers
• C) The movement of blood from the heart to the lungs and then back to the heart
• D) The passage of electrical impulses from the AV node to the SN node to heart muscle

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Definitions:

Dependent Variable

In experimental and statistical research, the variable being tested and measured, which is expected to change as a result of manipulations to the independent variable.

Independent Variable

In experimental research, the variable that is manipulated or changed by the researcher to observe its effects on the dependent variable.

Latent Factor

An underlying variable that is not directly observed but influences patterns of correlation between observed variables.

Control Factor

An element or variable that is manipulated or held constant in a study or experiment to determine its effect on the outcome.