Which Statement Concerning REM Sleep Is True

question 12

Multiple Choice

Which statement concerning REM sleep is true?

• A) During the REM stage, delta waves are emitted.
• B) Most people spend almost all of their sleep time in the REM stage.
• C) The preoptic area of the hypothalamus stimulates REM sleep.
• D) During REM sleep, blood flow to the entire brain decreases.
• E) REM sleep is absolutely necessary, as a lack of this stage causes anxiety and irritability.

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Definitions:

X-rays

A form of electromagnetic radiation used in imaging and diagnostics to view inside the body.

Ionization

The process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons.

Molecules

The smallest units of a chemical substance that can exist independently while retaining the substance's chemical properties.

Component Parts

Individual pieces or elements that together make up a complex whole.