Which Statement Is True of Sleep Cycles in Normal Sleep

question 265

Multiple Choice

Which statement is true of sleep cycles in normal sleep?

• A) Each consists of REM sleep followed by four stages of NREM sleep.
• B) Each consists of one or more stages of NREM sleep.
• C) Each consists of one or more stages of NREM sleep followed by REM sleep
• D) Each consists of four stages of NREM sleep followed by REM sleep.

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Definitions:

Pairs

Two things that are identical or similar in form, design, or function, often used together.

Receptor Sites

Specific locations on the surface of a cell or within a cell where molecules, such as hormones or neurotransmitters, can bind to initiate a cellular response.

Neurotransmitter Molecules

Chemical substances that transmit signals across a chemical synapse from one neuron (nerve cell) to another 'target' neuron, muscle cell, or gland cell.

Dendrites

The branched projections of a neuron that act to conduct the electrochemical stimulation received from other neural cells to the body, or soma, of the neuron.