When Do Atria Contract

question 109

Multiple Choice

When do atria contract?

• A)just prior to the beginning of diastole
• B)during diastole
• C)immediately after systole
• D)during systole
• E)just prior to the beginning of systole

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Definitions:

Sensory Adaptation

The process by which a sensory system becomes insensitive to a constant stimulus over time.

Sensory Receptors

Highly specialized cells in the sense organs that detect and respond to one type of sensory stimulus—light, sound, or odor, for example—and transduce (convert) the stimuli into neural impulses.

Stimulus

A stimulus is any event or situation that evokes a response from an organism.

Sensation

The process of detecting physical stimuli from the environment and converting them into neural signals that the brain can interpret.