Question

Ring of circular muscles around thwe opening of urethra.

Answer 1

Contraction of urethrovaginal sphincter leads to constriction of both the urethra and vagina. In males, the external urethral sphincter is located at the same level as the membranous urethra and is composed of circular muscle fibers.

Answer 2

The urethral sphincters

Explanation:

• The urethral sphincters are the muscles that control the excretion of the urine or the urination process in the body.
• The urine is stored in the urinary bladder and it is released through the urethra.
• The urethral sphincters are present in both males and in females.  
• The external side of the urethral sphincter originate from ischiopubic ramus. These muscles are controlled by the deep perineal branch.

Learn more about urethral sphincters:

It leads to the process of micturition (removal of urine from the body). Urethral sphincter is present between the bladder and urethra. It is a voluntary sphincter that controls the micturition.: https://brainly.in/question/7492632