Which muscle closes the anal opening?

A) external urethral sphincter
B) external anal sphincter
C) coccygeus
D) pubococcygeus

Closes the Anal Opening

This term likely refers to the sphincter ani externus muscle, which controls the opening and closing of the anus.

External Anal Sphincter

A muscle that controls the expulsion of feces from the anal canal.

External Urethral Sphincter

A muscle that controls the outflow of urine from the bladder and allows voluntary control over urination.