As Individuals Age, They Need Fewer Hours of Sleep

question 95

Multiple Choice

As individuals age, they need fewer hours of sleep. This is MOST likely due to changes in the levels of the neurotransmitter:

• A) dopamine.
• B) acetylcholine.
• C) epinephrine.
• D) serotonin.

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Definitions:

Proliferation

Rapid increase or growth of cells or organisms in a given environment or situation.

Synovial

Pertaining to synovial fluid or joints, specifically the type of joint that is encased in a flexible capsule filled with lubricating fluid to enable movement.

Homeostasis

The self-regulating process by which biological systems maintain stability while adjusting to optimal conditions for survival.

Negative Feedback

A regulatory mechanism in which a stimulus causes an opposite output in order to maintain an ideal level of whatever is being regulated.