The First and Second Heart Sounds Are Most Directly Related

question 28

Multiple Choice

The first and second heart sounds are most directly related to

• A) pulse pressure in the aorta.
• B) the contraction of the atria.
• C) vibrations that occur when the valves close.
• D) contraction of the papillary muscles.
• E) the flow of the blood.

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Definitions:

Empirical

Based on observations or experiences rather than theory or pure logic, often involving the collection and analysis of data.

Bystander Effect

A social psychological phenomenon where individuals are less likely to offer help to a victim when other people are present.

Needed Help

Requires assistance or support, possibly due to facing difficulties or being unable to resolve an issue independently.

Group Cohesiveness

The extent to which members of a group remain together and are united in the pursuit of common goals.