Give scientific reasons : Testis are located in the scrotum outside the abdominal cavity.
By the process of spermatogenesis of testes, spermatids and spermatozoa are formed. For this whole process the temperature of testis is below $3^{\circ} \mathrm{C}$ than the body temperature. It is necessary for spermatogenesis. The scrotum helps in maintaining the low temperature of testis.
Give information about reproductive accessory ducts in male.
The leydig's cells secrete
Which gland's secretion is act as lubricants in male?
Seminal plasma in human males in rich in