Which Statement Concerning the Sympathetic and Parasympathetic Branches of the Nervous

question 74

Multiple Choice

Which statement concerning the sympathetic and parasympathetic branches of the nervous system is true?

• A) The sympathetic system controls external stimuli, while the parasympathetic system controls internal stimuli.
• B) The sympathetic system generally produces increased physical activity, while the parasympathetic system produces a decrease in physical activity.
• C) Both nervous systems stimulate the activities of many organs.
• D) Both nervous systems release norepinephrine.
• E) The sympathetic system is under voluntary control, and the parasympathetic system is under involuntary control.

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Definitions:

Serotonin Transporter

A protein that facilitates the reuptake of serotonin from the synaptic cleft back into the presynaptic neuron.

Neuromodulator

A type of chemical messenger released from neurons in the brain to signal other neurons, modifying their activities and influencing many bodily functions.

Synaptic Cleft

The small gap at the synapse between neurons, through which neurotransmitters are sent to communicate signals.

Androgens

A group of hormones that play a role in male traits and reproductive activity; present in both males and females.