Question

Consider the following four statements (A-D) and select the option which includes all the correct ones
A) The male sex accessory ducts. Include testis, vasa efferentia, epididymis, and vas deferens.
B) Leydig cells synthesize and secrete testicular hormones called androgen.
C) The male reproductive system is located in the pelvic region
D) Each testis has about 250 compartments called testicular lobules.
(a) A, B, C, D
(b) B, C, D
(c) A, B, C
(d) A and B

Answer 1

Hint: The male and the female reproductive system have very different structures and organs in humans. While a female egg remains inside the female reproductive system the whole time, the sperms which are male gametes have to travel to the egg to fertilize it. Therefore, men have specialized organs to produce and transport sperms and discharge them into the female system.

Complete step by step answer:
All the statements are correct. The male reproductive system is located in the pelvic region and includes a pair of accessory ducts, external genitalia, and reproductive glands with a pair of testes. The testes consist of testicular lobules which are 250 in number. The lobules contain seminiferous tubules and the outside of these tubules are called interstitial spaces that have small blood vessels known as Leydig cells. These Leydig cells can secrete androgen hormone. The ducts are rete testis, vasa efferentia, epididymis, and vas deferens.

Additional Information: Humans are bisexual organisms which means males and females have specified but different reproductive organs. The male reproductive system of humans consists of two testes, accessory ducts or spermatic ducts, sex glands, and the external genitalia or penis. They together produce sperm and further the semen.

The whole system is located in the pelvic region. The penis is the external part that remains outside of the body with the scrotum. The penis is made of erectile tissues as it erects and becomes rigid during coitus. This is because the three cylindrical spaces of the tissue- two corpora cavernosa and one corpus spongiosum- gets filled with blood.
The testes remain in the scrotum which helps to maintain the perfect temperature in testes to produce sperm. Testes are oval and produce the sex hormone testosterone and sperms. It consists of 250 testicular lobules and each of them has one to three seminiferous tubules. This is where sperm production occurs. The outside of these tubules called interstitial space has the Leydig cells that secrete androgen. The prostate and seminal vesicle give the sperm its nourishment juice that also provides the maximum semen volume.
The accessory ducts are 4 in number- rete testis, vasa efferentia, epididymis, and vas deferens. The rete testis is the closest to the seminiferous tubules of the testes and vas deferens connects the whole duct system to the urethra which extends to the penis.
The sex glands are paired seminal vesicles, prostate glands,s and a pair of the bulbourethral glands.
So, the correct answer is ‘A, B, C, D’.

Note: The male reproductive system of humans produce, conserve, and transport sperm that are the male gametes which are essential for sexual reproduction in humans and to continue the generations. The sperm produced here gets released into the female reproductive system during coitus. The male reproductive system produces and discharges sex hormones essential to present male characteristics and to sustain the whole reproductive system.