Question

In response to a threat, we perspire, breathe more quickly, get goose bumps, and feel nauseated. these responses are controlled by the:______.
a. somatic nervous system.
b. peripheral nervous system.
c. sympathetic nervous system.
d. parasympathetic nervous system.

Answer 1

The sympathetic nervous system controls the response to a threat. We perspire, breathe more quickly and get goosebumps and feel nauseated. The correct answer is c. sympathetic nervous system.

The autonomic nervous system responds to information about the body and the environment by either stimulating or inhibiting bodily functions, typically through the sympathetic or parasympathetic nervous systems.There are two primary divisions of the autonomic nerve system-

• Sympathetic
• Parasympathetic

The sympathetic nervous system controls the "fight-or-flight" reaction, which is activated by danger or stress and can lead to a number of physiological changes. Most blood vessels, including many in the epidermis, digestive tract, and kidneys, constrict when the sympathetic nervous system is stimulated. This happens due to norepinephrine, released by post-ganglionic sympathetic neurons, activating alpha-1 adrenergic receptors. Sympathetic nervous system may impact these organs while under threat or stress:eyes, heart, lungs, digestive tract, liver, and genitalia.

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