Transmission Across the Synaptic Cleft Is Accomplished by Chemical Signals

question 31

Multiple Choice

Transmission across the synaptic cleft is accomplished by chemical signals called

• A) hormones.
• B) exocrine secretions.
• C) enzymes.
• D) stimulants.
• E) neurotransmitters.

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Definitions:

Rapid Eye Movement

A phase of sleep characterized by the random movement of the eyes, dreaming, and increased brain activity.

Stage 2 Sleep

A stage of sleep characterized by the presence of sleep spindles and K complexes, representing a deeper sleep than stage 1 and accounting for approximately 50% of sleep time in adults.

Beta Wave

A type of brainwave pattern associated with active, alert cognition and wakefulness.

Alpha Wave

Brain waves detected by an electroencephalogram that indicate a state of relaxation or calmness, typically present when a person is awake but relaxed.