Question

Which of the following is correct During ejaculation, when sperm leave the male reproductive tract: a)...

Which of the following is correct

During ejaculation, when sperm leave the male reproductive tract:

a) semen propel sperm through the ductus deferens.

b)the internal urethral sphincter constricts.

c)the urinary bladder is emptied.

d) the external urethral sphincter constricts.

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Answer #1

The correct answer for the above statement is b) the internal urethral sphincter constrict.

Ejaculation is process of discharge of semen which normally contain sperm in males .The sperm is passed through various ducts such as epididymis , duct deferens (vas deferens) , ejaculatory duct and urethra before moving outside of the body. When it passes through urethra there is constriction of urethra which prevent the urine from entering the urethra. In case of males internal sphicter muscle of urethra is involved in ejaculation.

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