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Coloured SEM of human sperm

Coloured SEM of human sperm

P624/0079

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Credit

DR TONY BRAIN / SCIENCE PHOTO LIBRARY DR TONY BRAIN / SCIENCE PHOTO LIBRARY

Caption

Human sperm. Coloured Scanning Electron Micrograph (SEM) of several mature human sperm (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 head (red), neck and tail (blue) regions. A 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. Magnification: unknown.

Release details

Model release not required. Property release not required.

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