Name the specialized smooth muscle of the urinary bladder, and describe its function
A) The trigone muscle compresses the bladder and expels the urine into the urethra.
B) The lateral umbilical ligaments compresses the bladder and expels the urine into the urethra.
C) The detrusor muscle compresses the bladder and expels the urine into the urethra.
D) The middle umbilical ligament compresses the bladder and expels the urine into the urethra.
E) The bulbospongiosus muscle compresses the bladder and expels the urine into the urethra.
Answer: C
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