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  Wikipedia: Sperm

Wikipedia: Sperm
Sperm
From Wikipedia, the free encyclopedia.

A sperm cell (or spermatozo÷n) is the haploid cell that is the male gamete. A sperm cell can fertilize an egg cell to form a zygote, which can grow into a new organism. Like many other organisms, human offspring is created by this process.

Sperm is carried in the fluid called semen.

In humans, sperm cells consists of head 0.005 by 0.003 mm and tail 0.05 mm long. The tail flagellates, which propels the sperm cell. The cell is characterized by a minimum of cytoplasm.

Sperm cells were first observed by Antoni van Leeuwenhoek in 1679.

(1) Acrosome (2) Cell membrane (3) Nucleus (4) Mitochondria (5) Tail (flagella)


  

From Wikipedia, the free encyclopedia. 
Modified by Geona