Question

The shared terminal duct of the reproductive and urinary system in the human male is
A. Urethra
B. Ureter
C. Vas deferens
D. Vasa Efferentia

Answer 1

Hint: The shared terminal duct of the reproductive and urinary system in the human male is the duct which contains both semen and urine. This duct is divided into three parts and the first part of this duct is surrounded by the prostate gland. This duct receives the ducts of the prostate and Cowper’s gland passes the penis and opens to the outside.

Complete answer:
The male reproductive system consists of several organs located outside the body and around the male pelvis that play a role in the reproductive process. The main and important function of the male reproductive system is to provide sperm for fertilization of the egg. The male reproductive system consists of the scrotum, testicles, accessory ducts and glands, urethra, and penis.
Male reproductive system Includes following structures:
Testis: The shape is oval, pink. The testicles are placed in a thin pocket of skin called the scrotum. Testicles is located outside the abdomen. This is due to the fact that for normal sperm production, the temperature in the testicles must be below body temperature.
Vasa Efferentia: Vasa Efferentia is a pair of duct structures arising from rete testis and extends upto epididymis.
Epididymis : The epididymis is connected with the vas deferens. It is a long wound tube located on the back of each testicle. The function of the epididymis is to store and transport sperm produced by the testicles.
Vas deferens: The vas deferens are the muscle ducts that extend from the scrotum from the groin and into the urethra, the tube that leads out of the bladder. The end of each vas deferens expands and forms an ejaculation duct that can contract and expel the stored sperm.
Penis: The penis is a muscular tubular organ made of loose tissue with spaces in between. This is called erectile tissue. When stimulated, the erectile tissue fills with blood, making the penis erect and tense, allowing it to penetrate the female vagina and discharge semen. The male external genitalia is represented by penis.
Urethra: Male urethra provides a common pathway for the flow of urine and semen. It is much longer male than females.
Ureter: The ureter of each kidney exits the renal pelvis at the site of hilum. Each ureter is a narrow, whitish, tubular structure that runs along the abdominal wall, opening the bladder. The ureter consists of transitional epithelium. It carries urine from the kidneys to the bladder.
Hence from the above points it’s clear that urethra is a shared terminal duct of the reproductive and urinary system in the human male.

So the correct option is (A).

Note:
Urethra is divided into following parts
> First part is surrounded by the prostate gland and is called the glandular part of the urethra.
> Membranous urethra is the second part which is situated behind the lower part of pubic symphysis and is smallest.
> Penile urethra is situated in the penis and is the longest part.
> The urethra receives the ducts of the prostate and Cowper’s gland passes the penis and opens to the outside. The discharge of Cowper’s gland lubricates the vagina to smooth out the movement of the penis during intercourse. Prostate gland surrounds the proximal urethra. It is lobulated and large .These secretions contain lipids, bicarbonate ions, enzymes, and small amounts of citric acid.