Reproductive System
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Are humans oviparous or viviparous?
Viviparous
Name the primary sex organs of male and female.
Ovaries and testis
Name the reproductive organs of male.
Testis, penis, accessory ducts, accessory glands and external genitalia
Name the pouch in which testis is in.
Scrotum
What is cryptochordism?
When testis doesn’t descend.
Name the tough white connective tissue of the testis.
Tunica albuginea
How many testicular lobules do testis have?
Around 250 each
Testicular lobules consist of _______.
Seminiferous tubules
Name the two types of cells in the seminiferous tubules.
Male germ cells and sertoli cells
Function of sertoli cells
Provide nutrition to the male germ cells
Name the cell outside the seminiferous tubules
Interstitial cells or leydig cells
Function of leydig cells
Secretion of testosterone
Function of testis
Production of sperm and synthesis and secretion of testosterone
Name the order of accessory ducts order wise
Rete testis Vasa efferentia Epididymis Vas deferens Ejaculatory duct Urethra
External opening of urethra called?
Urethral meatus
Name the accessory glands of the male reproductive organs
Seminal vesicles Prostate glands Bulbourethral or Cowper’s gland
Function of seminal vesicles
Gives viscous medium Contains fructose to provide nutrition and prostaglandins to increase motility and viability to sperms Has proteins to coagulate the semen
Function of prostate gland
Gives milky white colour and alkalinity
Function of bulbourethral gland
Gives alkalinity and lubrication
Process of spermatogenesis
Spermatogonium Primary spermatocyte (2n) Secondary spermatocyte (n) Spermatids Spermatozoa
Function of epididymis
Maturation of sperm cells
Parts of sperm cell
Head, neck, mid piece, principal piece and end piece
What does the head and neck of the sperm contains
Head has a nucleus and acrosome Neck has centriole that has an extended microtubule
What does acrosome contains?
Enzymes like hyaluronidase and proteases