Men produce millions of sperm every day, all ready for a great race to fertilization. You may be surprising to think that many gametes need a single egg that will receive them, but this huge production is necessary to ensure that at least one of them exceeds the boundaries of dangerous race that awaits them.
More than 200 million sperm are produced in each ejaculation. They will have to survive the acidity of the vagina, cervix pass, trick white blood cells attack any invading the body, climb dangerous and narrow path to the fallopian tubes and ultimately reach the egg for the first can enter the barrier to get into it in order to give rise to a new being. The sperms are born in the testes and progress slowly for days through the ducts of the epididymis and vas deferens.
Sperm are expelled with the seminal fluid. It is a viscous, whitish or slightly yellowish, sometimes lumpy, which occurs mainly in the seminal vesicles (up to 80%) and prostate (between 13 and 33%). It contains proteins, fructose, Favino, citric acid and phosphatises.
The average volume of semen ejaculation is 1.5 to 5 millilitres, with a maximum of 15 ml and occurs after 12 or 14 years throughout life, although their number decreases with age.
Under the right conditions sperm survive several days outside the body, may be alive even after death, and live several days inside the tubes after intercourse. They also keep their fertilizing capacity of frozen, keeping them for artificial insemination.
The amount of sperm is a guarantee for successful fertilization, so its quality care, declining in industrialized countries, is important. A balanced diet, the less exposure to chemicals, abstinence from alcohol, drugs and snuff, the rational use of laptops, good hygiene and clothing that are not over tighten basic tips to prevent poor quality of sperm.