The germinal cells of the seminiferous tubules produce spermatozoa – the male sexual cells, The interstitial cells located outside the seminiferous tubules secrete androgenic hormones (mainly testosterone)

Scrotum – two compartment – the dartos muscle, Scrotum – one compartment for each testicle – perineal raphe, Inguinal canal – low resistance point of the anterior abdominal wall – inguinal hernia

The seminal fluid adapts its composition according to the secretions or the cells lining the epididymis, The pH of the seminal fluid is acid due to the degradation products of stored sperm, Spermatozoa gain mobility in the epididymis in approximately two weeks

They are organs that participate in sperm transportation during copulation, The seminal vesicle is a paired organ and secretes prostaglandins (hormonal substances), The prostate, also called prostate gland, is an unpaired organ which secretes an alkaline fluid

It is the process by which male gametes are produced, It begins in the outermost layer of the germinal cells in the seminiferous tubules, The cells resulting from this process are called spermatozoa

They result from the mitotic division of spermatogonia, They are diploid cells (2n), their nucleus containing 46 chromosomes per cell, They develop in the convoluted seminiferous tubules and they are moved to the inner regions of the latter

They are also called male sexual cells or spermatozoa, They develop in the lobules of testis, in the convoluted seminiferous tubules, The head, neck, middle piece and tail are parts of the spermatozoon