Micturition, or the process of urination, is a complex body function. it requires control and integration of both voluntary and involuntary nervous system components. the process of voiding urine begins if the voluntary relaxation of this muscle, occurs.
a. internal sphincter muscle of the bladder
b. urethra
c. external sphincter muscle of the bladder
d. emptying reflex muscle

The correct option is : c. external sphincter muscle of the bladder

Explanation:

The process of excretion of urine from the urinary bladder to outside the body through the urethra is known as Micturition. The other names for micturition are urination and voiding.

In a normal human being, the process of micturition requires both the voluntary and involuntary nervous system components.

The external sphincter is a voluntary muscle. For urination to occur the external sphincter muscle must be relaxed.

Therefore, the process of voiding urine begins if the external sphincter muscle relaxes voluntarily.

answer:

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Explanation:

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