The nurse explains that the two divisions of the autonomic nervous system work to maintain homeostasis. Place in order the autonomic events. (Separate letters by a comma and space as follows: A, B, C, D)
a. Parasympathetic nervous system dominates
b. Extremely stressful or frightening event
c. Blood pressure, heart rate, and adrenaline output decrease
d. Sympathetic nervous system dominates
e. Heart rate and blood pressure rise, secretion of adrenaline
ANS:
B, D, E, A, C
In the event of a frightening event, the sympathetic nervous system dominates and increases the blood pressure, heart rate, and adrenaline output in the "fight or flight" mechanism. The body is calmed by the parasympathetic nervous system dominating and reducing the heart rate, blood pressure, and adrenaline output.
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