Question

 The opening of urethra is controlled by

a) Sphincter muscle

b) Cardiac muscle

c) Calf muscle

d) Biceps muscle

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Answer 1

Answer:

The internal urethral sphincter regulates involuntary control of urine flow from the bladder to the urethra, and the external urethral sphincter provides voluntary control of urine flow from the bladder to the urethr

Answer 2

Answer:

a) sphincter muscle

Explanation:

The urethral sphincter is a muscular structure that regulates the outflow of urine from the bladder into the urethra.

There are 2 urethral sphincters, the external and internal urethral sphincters.

When these muscles contract, the urethra narrows, and urination stops or slows.

The urethral sphincter is critical for the maintenance of urinary continence.

hope it helps.