Which statement characterizes sympathetic activity?
A) blood vessels with alpha receptors dilate.
B) the bronchioles constrict.
C) the pupils of the eye dilate.
D) the secretion of the sweat glands is inhibited.
E) the urinary bladder contracts and eliminates urine.

Question

Quizplus · Accepted Answer

Sympathetic activity causes the dilation of the pupils of the eye.

Answer: B 
 The constriction of bronchioles is a characteristic of parasympathetic activity rather than sympathetic activity.

Answer: A 
 Sympathetic activity causes the constriction of blood vessels due to alpha receptor activation.

Answer: D 
 Sympathetic activity stimulates the secretion of sweat glands.

Answer: E 
 Sympathetic activity inhibits the contraction of the urinary bladder, instead promoting relaxation of the detrusor muscle and contraction of the internal urethral sphincter, leading to urine retention.

Which Statement Characterizes Sympathetic Activity