Coloured SEM of human sperm cells

Numéro d’image : 12528300
Coloured SEM of human sperm cells
Human sperm. Coloured Scanning Electron Micrograph (SEM) of human sperm cells (also called spermatozoa). Sperm are the motile male sex cells produced in the testis. Each sperm is about 65 micrometers long and broadly divided into a round head (at right), neck and tail regions. The pear-shaped head contains the nucleus and genetic material of the male needed to fertilize the female egg (ovum). The head is joined to the tail by a short neck. The sperm's tail enables it to swim by whiplash movements, an action that propels it to reach the ovum. The 3 millilitres of semen ejaculated by a man contain about 200-300 million sperm. Magnification: x1250 at 6x6cm size.
Licence : Droits gérés
Crédit: Science Photo Library / EYE OF SCIENCE
Taille de l’image : 5015 px × 5051 px
Model Release : Non requis
Property Release : Non requis
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  • All moral rights asserted. Recolouring or alteration of the image is prohibited without permission.

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