1.

Answer the following questions. (A). Write the specific location and the functions of the following cells in human males: (i) Leydig cells (ii) Sertoli cells (iii) Primary spermatocyte.(B). Explain the role of any two accessory glands in human male reproductive system

Answer»

(A)

CellsLocationFunction
1Leydig cellsOutside seminiferous tubules in interstitial spaceSynthesis and secretion of testicular hormones called androgens.
2Sertoli cellsInside the seminiferous tubulesProvide nutrition to the germ cells.
3Primary spermatocyteInner wall of seminiferous tubulesUndergo meiotic divisions to form secondary spermatocyte and then haploid sperms.

(B) The two accessory glands are: 

(i) Prostate gland: It surrounds the urethra and produces a milky secretion which forms a considerable part of semen. This secretion contains citric acid, lipids and enzymes. The secretion nourishes and activates the spermatozoa to swim. 

(ii) Seminal vesicles: These secrete mucous and a watery alkaline fluid that contains fructose which provides energy to the sperms.



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