The Hormone Melatonin Helps Synchronize the Sleep-Wake Cycle by Means

question 105

Multiple Choice

The hormone melatonin helps synchronize the sleep-wake cycle by means of

• A)stimulating the hypothalamus to activate the sleep cycle.
• B)triggering the SCN when the amount of light striking the retina declines.
• C)traveling to the amygdala to activate the sleep cycle.
• D)inducing feelings of drowsiness.
• E)inducing alertness just preceding awakening.

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Definitions:

Evaporation

Transition of a liquid to a vapor.

Coelomic Fluid

Fluid found within the coelom, the body cavity of most animals, which aids in the transport of gases, nutrients, and waste materials.

Nephridia

Excretory organs in many invertebrates, including annelids, that serve to remove metabolic wastes from an organism’s body.

Earthworm

A terrestrial invertebrate belonging to the phylum Annelida, known for its role in aerating the soil and enhancing soil fertility.