Which of These Statements Concerning the Functional Characteristics of the Heart

question 39

Multiple Choice

Which of these statements concerning the functional characteristics of the heart chambers is NOT correct?

• A) During ventricular diastole, blood collects in the right and left atria.
• B) At the very beginning of ventricular diastole, blood flows directly from the atria into the relaxed ventricles.
• C) 70% of ventricular filling occurs before the atria contract.
• D) During ventricular systole, the atrioventricular valves close.
• E) During ventricular diastole, the semilunar valves open.

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Definitions:

Characteristics

Distinctive or identifying features or qualities of a person, object, or phenomenon.

Hypotheses

Proposed explanations made on the basis of limited evidence as starting points for further investigation.

Theory

A system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.

Nondirectional Research Hypothesis

A hypothesis that predicts a relationship or effect but does not specify the direction of the relationship.