Sex hormones, namely:• male hormone is (testosterone).• female hormones progesterone and (Oestrogen).

  The male sex hormone testosterone:

• stimulates the emergence of secondary sexual signs in males.

• accelerate the building of tissue and blood flow.

• necessary to sense instinctively sexual erection of the penis.

• increases muscle building.

• increases the growth of facial and pubic hair.

• Works on the distribution of fat in certain places in adult men.

• affects a lot of metabolic processes (metabolism) in the body.Female hormone estrogen:

• stimulates the emergence of secondary sexual signs in females.

• Works on the distribution of fat in certain places in the body of an adult woman.Female hormone progesterone:

• significant changes occur in the lining of the uterus in the second half of the menstrual cycle.

• prepares the uterus for the following changes

1 - implantation of the fertilized egg

2 - Mother 3 placenta growth - the growth of breast cells secretory.