Human males have paired tests - are sites of sperm production. Each testis is composed of seminiferous tubules in which sperm develop.
In the most mammals, the two tests are kept permanently in sac-like scrotum structure suspended outside the abdominal cavity.
The scrotum is suspended outside the abdominal cavity because sperm production requires a temperature slightly lower than the body's core temperature. This external position allows for temperature regulation, critical for proper sperm development.
The sperm travels from seminiferous tubules to epididymis where the sperm maturation occurs then to vas deferens - ejaculatory duct. Then the Vas deferens(only one pair) joins the urethra - this a duct or tube that carries both sperm and urinary products through the penis.
There are 3 accessory glands open into the reproductive channels
Fluid secreted by these glands furnishes food to sperm, lubricates the female reproductive tract for sperm (Bulbourethral gland) and counteracts the acidity of the vagina so that the sperm retain their viability longer after deposited (Prostate gland) in the female.
#Semen is a mix of sperm, proteins, nutrients, ions and signalling molecules.
The sperm has head, middle and tail. The head is packed full of genetic material and covered by enzyme that helps the sperm to penetrate to the female body easily. There is a flagellum in its tail. That it uses to swim toward the egg. In its midsection, it contains mitochondria that give energy for required flagellar movement.
