Multiple Choice
How does the body prolong the effects of the sympathetic nervous system during shock?
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14. The Autonomic Nervous System
Sympathetic Nervous System
Multiple Choice
In the sympathetic nervous system, which hormone released from the adrenal medulla primarily helps regulate the “fight-or-flight” response?
A
Insulin
B
Thyroxine (T4)
C
Epinephrine (adrenaline)
D
Melatonin
Verified step by step guidance1
Understand the role of the sympathetic nervous system, which is responsible for the 'fight-or-flight' response, preparing the body to react to stress or danger.
Identify the adrenal medulla as the inner part of the adrenal gland that releases hormones directly into the bloodstream during sympathetic activation.
Recall that the adrenal medulla primarily secretes two hormones: epinephrine (also called adrenaline) and norepinephrine (noradrenaline).
Recognize that epinephrine is the main hormone that amplifies the fight-or-flight response by increasing heart rate, blood flow to muscles, and energy availability.
Eliminate other options: insulin regulates blood glucose but is not involved in fight-or-flight; thyroxine (T4) regulates metabolism; melatonin regulates sleep-wake cycles.
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