Sperm

Sperm are the male reproductive cells. Most animals and plants use sperm to reproduce. They have different ways of making and releasing the sperm. In all cases the sperm meets with the egg of the female and together they grow into a new organism.

The name sperm is taken from the Greek word sperma meaning seed.^[1]

An animal sperm cell is capable of movement, as it has to get to the uterus to meet with the ovum. Animal sperm cells (including humans) have small 'head' and a long tail called a flagellum. The flagellum acts like a motor to propel the sperm cell through the female reproductive system.

1. ↑ "Etymology of Sperm".