A) heartbeat
B) secretion of semen
C) secretion of saliva
D) secretion of digestive juices
Correct Answer: A
Solution :
Sympathetic nervous system increases the (i) rate and force of heart beat (ii) constricts most blood vessels (iii) raises the arterial blood pressure (iv) dilates the pupil, (v) slows down peristaltic movements, (vi) and relax the urinary bladder.
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