Sperm – sperm.

Sperm (Gr. Sperm seed zoon animal and Eidos way) – the male germ cells, gametes. Sperm discovered by German physician J.Gams 1680 g., The term was introduced in the Baltic German zoologist, founder of embryology, K. Behr. Sperm length is 50-60 mikromilimetru, it consists of heads, necks and tails. Head in the core, which contains all the genetic information father. Tails wavy movements provide sperm movement. Viability of female genital sperm keeps 2-3 days.