The Name Echinodermata Literally Means

question 15

Multiple Choice

The name Echinodermata literally means

• A) spiny skin.
• B) soft skin.
• C) circulation of water.
• D) skinless.
• E) ability to store water.

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Definitions:

Melatonin

A hormone produced by the pineal gland in the brain, responsible for regulating sleep-wake cycles.

Biological Clock

An internal mechanism in living organisms that controls the timing of various biological functions, such as sleep-wake cycles, reproductive cycles, and metabolism.

Atrial Natriuretic Peptide

A hormone produced by the heart that helps regulate blood pressure and fluid balance.

Blood Pressure

The force exerted by circulating blood upon the walls of blood vessels, a critical vital sign that reflects the heart's function and the arterial blood vessels' condition.