Question

Male reproductive system?

What receives the sperm and fluid from the epididymis? ...

What is the male reproductive organ? ...

What abnormal condition or disease (in males) has symptoms such as intense pain in the testes, swelling, and fever? ...

Where does fertilization occur? ...

What is the inner layer of the uterus called?

Answer 1

The male reproductive system is located in the pelvis region. It includes a pair of testes

along with accessory ducts, glands and the external genitalia.

 The testes are situated outside the abdominal cavity within a pouch called scrotum. The

scrotum helps in maintaining the low temperature of the testes (2–2.50C lower than

the normal internal body temperature) necessary for spermatogenesis.

 Each testis has about 250 testicular lobules. Each lobule contains one to three highly

coiled seminiferous tubules in which sperms are produced.

 Each seminiferous tubule is lined on its inside by two types of cells called male germ

cells (spermatogonia) and Sertoli cells.

 The male germ cells undergo meiotic divisions finally leading to sperm formation, while

Sertoli cells provide nutrition to the germ cells.

 The regions outside the seminiferous tubules called interstitial spaces, contain small

blood vessels and interstitial cells or Leydig cells. Leydig cells synthesise and secrete

testicular hormones called androgens [a male sex hormone, such as testosterone.

Androgens stimulates or controls the development and maintenance of male

The male sex accessory ducts include rete testis, vasa efferentia, epididymis and vas

deferens.

 The seminiferous tubules of the testis open into the vasa efferentia through rete testis.

 The vasa efferentia leave the testis and open into epididymis. The epididymis leads to

vas deferens that ascends to the abdomen and loops over the urinary bladder. It receives

a duct from seminal vesicle [gland that secrete many of the components of semen] and

opens into urethra as the ejaculatory duct. These ducts store and transport the sperms

from the testis to the outside through urethra.

 The urethra originates from the urinary bladder and extends through the penis to its

external opening called urethral meatus.

 The penis is the male external genitalia. It is made up of special tissue that helps in

erection of the penis to facilitate insemination. The enlarged end of penis called the

glans penis is covered by a loose fold of skin called foreskin.

 The male accessory glands include paired seminal vesicles, a prostate [releasing a fluid

component of semen] and paired bulbourethral glands.

 Secretions of these glands constitute the seminal plasma which is rich in fructose,

calcium and certain enzymes.

 The secretions of bulbourethral glands also helps in the lubrication of the penis.