What Is Caused by Electrical Signals That Produce a Quiver

question 22

Multiple Choice

What is caused by electrical signals that produce a quiver, not a contraction, in the heart muscles of the atria or ventricles?

• A) Angina
• B) Sinus tachycardia
• C) Fibrillation
• D) Sinus bradycardia

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Definitions:

Attention Deficit Hyperactivity Disorder

A neurological disorder characterized by patterns of inattention, hyperactivity, and impulsivity that are not appropriate for a person's age.

Dementia

A decline in cognitive function beyond what might be expected from normal aging, affecting memory, thinking, orientation, comprehension, calculation, learning capacity, language, and judgment.

Dummy Variable

A variable used to model the effect of categorical independent variables. A dummy variable may take only the value zero or one.

Categorical Independent Variables

Variables that divide subjects into groups but do not allow for any kind of mathematical operation among groups.