Voluntary control of urination is accomplished by:

Question

Quizplus · Accepted Answer

The external sphincter is made of skeletal muscle and is under voluntary control, allowing a person to hold or release urine at will. The internal sphincter is made of smooth muscle and is under involuntary control. The skeletal muscle of the bladder helps to contract the bladder during urination, but is not involved in voluntary control of urination. The ureters are tubes that transport urine from the kidneys to the bladder and are not involved in voluntary control of urination.

Voluntary Control of Urination Is Accomplished By