File:Sperm cell.jpg

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Sperm cell

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	05:14, 19 January 2012		640 × 502 (89 KB)	Ssakagami (talk \| contribs)	Sperm cell

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Author	Wellcome Images
Copyright holder	Copyrighted work available under Creative Commons by-nc-nd 2.0 UK, see http://images.wellcome.ac.uk/indexplus/page/Prices.html
Image title	B0007805 Sperm cell Credit: Anna Tanczos. Wellcome Images images@wellcome.ac.uk http://images.wellcome.ac.uk This illustration shows the structure of a sperm cell (the male gamete). Each single spermatozoan (plural spermatozoa) contains a haploid number of chromosomes (one copy of each) in the nucleus situated in the head region. Surrounding the head of the sperm cell is the acrosome cap - this contains special enzymes that digest the zona pellucida (the membrane surrounding the egg cell) to assist in fertilization. The mid piece of the sperm cell contains two centrosomes and coiled mitochondria. The sperm will contribute both centrosomes to the embryo upon fertilization, which are essential for organising microtubules and thus subsequent cell divisions of the embryo. The large coiled mitochondria provide the sperm with the energy supplied to the long flagella (or tail) required for it motility. Digital artwork/Computer graphic August 2010 Published: - Copyrighted work available under Creative Commons by-nc-nd 2.0 UK, see http://images.wellcome.ac.uk/indexplus/page/Prices.html
IIM version	2
Short title	B0007805 Sperm cell
Headline	B0007805 Sperm cell