The Pericardium Is

question 30

Multiple Choice

The pericardium is:

• A) the outer muscular layer of the heart.
• B) the innermost layer of the heart chambers.
• C) a membranous sac that encloses the heart.
• D) the heart's fibrous skeleton.

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Definitions:

Unconditioned Response

An automatic, innate reaction to a stimulus that occurs naturally without any prior learning or conditioning.

Fourth Of July

A federal holiday in the United States commemorating the Declaration of Independence, celebrated with fireworks, parades, and barbecues.

Firecrackers

Small explosive devices primarily used for entertainment, especially in celebrations, producing a loud noise and visual effects upon ignition.

Conditioned Stimulus

A stimulus that was once neutral but, after pairing with the unconditioned stimulus, begins to provoke a conditioned response.