THORAX ABDOMEN AND PELVIS

MEDICAL

GALLBLADDER AND EXCRETORY SYSTEM OF THE LIVER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What type of muscle allows you voluntary control over urination?
A
skeletal muscle
B
smooth muscle sphincters
C
cardiac muscle
D
ligaments
Explanation: 

Detailed explanation-1: -The internal urethral sphincter regulates involuntary control of urine flow from the bladder to the urethra, and the external urethral sphincter provides voluntary control of urine flow from the bladder to the urethra.

Detailed explanation-2: -A ring-shaped muscle that relaxes or tightens to open or close a passage or opening in the body.

Detailed explanation-3: -Smooth muscle stretch initiates the micturition reflex by activating stretch receptors in the bladder wall. This autonomic reflex causes the detrusor muscle to contract and the internal urethral sphincter muscle to relax, allowing urine to flow into the urethra.

There is 1 question to complete.