Human Reproduction

Male reproductive systems


  • In males, reproductive system is located in the pelvis region, which includes a pair of testes along with accessory ducts, glands and the external genitalia.
  • Testes are paired structures which lie outside the abdominal cavity in a thin pouch of skin called scrotum which helps is maintaining the law temperature of testes (2-2.5°C lower than the normal internal body temperature) that is required for spermatogenesis.
  • In a dults, each testis is oval in shape with a length of about 4 to 5 cm and width of about 2 to 3 cm. Tunica albuginea  is a dense covering that surrounds tests.
  • Each tests has about 250 compartments called testicular lobules that contains one to three highly coiled seminiferous tubules.
  • Majority of cells in germinal epithelium are cuboidal called male germ cells and at certain cells, there exist tall sertoli (or) sustentacular cells, which provides nutrition to the developing sperms.
  • In between the seminiferous tubules, there are present a small groups of rounded interstitial (or) Leydig's cells that secrete mole sex hormones [Eg. Testosterone]
  • The seminiferous tubules are closed at one end but on the other side they join to a network the rote testis from where vasa efferentia arise.
  • The vasa efferentia leave the testis and open into epididymis located on the posterior surface of each testis.
  • Vasa deferens is connected with epididymis at the tail end. The union of the canals from seminal vesicles and vasa deferens form the ejaculatory duct.
  • The urethra originates from Urinary bladder and extend through the penis to its external opening called urethral meatus.
  • The penis is a cylindrical and highly vascularised capulatory organ, that is made up of special tissue that helps in creation of penis to facilitate insemination.
  • The enlarged end of Penis is glans penis which is covered by a loose fold of the skin called foreskin.
  • Male accessory glands ⇒[Paired seminal vesicles, Prostate (paired) and a paired bulbourethral glands]
  • Seminal vesicles, secrete viscous fluid which constitute the main part of the ejaculate seminal fluid contains fructose [as a source of energy which provide nourishment for the activity of sperm, Prostaglandins and clotting proteins].
  • The Prostate gland lies at the base of urinary bladder and surrounds the first part of urethra. Prostate fluid contain citric acid, number of enzymes and prostaglandins.
  • The 2 bulbo urethral glands (or) couperin gland secrete a clear, Viscous, mucus secreted by then neutralize any acid urine remaining [urethra]
  • Semen is a collection of secretion from seminal vesicles, prostate gland and cowper's gland.

Part-1: Watch this video for the topic from 0:32 to 11:52

Part-2: Watch this video for the topic from 0:37 to 15:28

Part-3: Watch this video for the topic from 0:11 to 15:40

Disclaimer: Compete.etutor.co may from time to time provide links to third party Internet sites under their respective fair use policy and it may from time to time provide materials from such third parties on this website. These third party sites and any third party materials are provided for viewers convenience and for non-commercial educational purpose only. Compete does not operate or control in any respect any information, products or services available on these third party sites. Compete.etutor.co makes no representations whatsoever concerning the content of these sites and the fact that compete.etutor.co has provided a link to such sites is NOT an endorsement, authorization, sponsorship, or affiliation by compete.etutor.co with respect to such sites, its services, the products displayed, its owners, or its providers.