PATHOLOGY

Detailed explanation-1: -The urethral sphincter can be used to control micturition. Voiding urine begins with voluntary relaxation of the external sphincter muscle of the bladder. Parasympathetic impulses induce contractions of the bladder and relaxation of the internal sphincter [18].

Detailed explanation-2: -The primary function of the detrusor muscle is to contract during urination to push the urine out of the bladder and into the urethra. The detrusor muscle will relax to allow the storage of urine in the urinary bladder.

Detailed explanation-3: -When the bladder is full, stretch receptors in its muscular wall stimulate a parasympathetic nervous system response. This results in contraction of the detrusor muscle of the bladder and relaxation of the smooth muscle of the internal urethral sphincter.