Bladder Seminal VesiclesProstate Gland Vas DeferensEpididymis Glans Penis
Corpus Cavernosum Urethral Opening ScrotumLabium MajoraLabium Minora UrethraClitoris Pubic bone Vagina Urinary Bladder
Cervix Uterus OvaryFallopian TubeUreter Rectum Axoneme Basal BodyNucleus Acrosome Sperm Testicle Endpiece Corona RadiataZona Pellucida Egg CytoplasmFirst Polar BodyOvum Mitochondria
STRUCTURE AND LOCATION
Sperm is usually oval in shape and consists of a head, middle part and a tail.
- The head is the basic part that contains all the genetic information condensed in the form of chromosomes. On the anterior side of the head, there is a small cap known as acrosome. Acrosome has enzymes in it that are essential for penetration of sperm into the egg.
- The middle part contains millions of mitochondria producing ATP required for movement across the vagina and uterus and propelling towards the egg.
- The tail is a modified flagellum actually, which is required for the motility of the sperm. This motile sperm then moves towards the egg with the help of this flagellum.
- The sperms are produced in the male testes and require a relatively cold temperature for the production.
- Each sperm is only 50 micrometers long.
- During a single ejaculation, one/fourth of a billion sperms are produced in semen.
- Sperms are meant to fertilize the egg of a female and hence a zygote is produced which grows into an Embryo and then Fetus and ultimately a new baby. In this way, sperm constitutes the half of the genetic information of the zygote and other half is carried by the female egg.
- Sperm cell plays the main role in determining the newborn’s gender.
Azoospermia is lack of sufficient sperm cells in the semen and fertilization does not take place as a result.