Semen

Semen:

The fluid that ejaculated at the time of orgasm contains sperms and secretion of seminal vesicle, prostate and cowpers gland.

Normal semen volume 2.5-5 ml,

sperm count 20,000,000 per ml, activity (motility) 50 %, progressive movement 60% .

Subfertile means decrease in volume count …. Etc..

Capacitation of spermatozoa:-

Several changes believe to occur that activate the sperm for final process of fertilization, these changes are:-

1. The uterine and fallobian tube fluids washaway the inhibitory factors that suppress sperm motility

2. The sperm deposited in female genital tract loses much cholesterol from the head, so the membrane at the head of the sperm becomes weak.

3. The membrane of sperm’s head become small permeable for Ca, and Ca enter the sperm giving it powerful motion , without capacitation the sperm cannot fertilize the ovum