Contraction of the detrusor muscle is
A) Promoted by stretch receptors in the wall and inhibited by volitional control
B) Promoted by stretch receptors in the wall and inhibited by sympathetics in the pelvic nerve
C) Activated by stretch and inhibited by sympathetics in the hypogastric nerve
D) Entirely volitional
E) Stimulated by both sympathetic and parasympathetic systems

Question

Quizplus · Accepted Answer

The contraction of the detrusor muscle, which is part of the bladder wall, is promoted by stretch receptors in the bladder wall as the bladder fills with urine, signaling the need to urinate. This process is inhibited by the sympathetic nervous system through fibers in the hypogastric nerve, which helps to retain urine until voluntary urination is initiated.

Contraction of the Detrusor Muscle Is