A sperm cell is one of the most specialised cells in the animal body. They arise by repeated mitosis
This has two important features. The acrosome
The Middle Section.
This part, immediately behind the head, contains numerous mitochondria
This contains microfilaments running the length of the tail (arranged in the usual 9 + 2 system seen in Eukaryotic organisms). Rhythmic contraction of the filaments causes the tail to wave and move against the fluid environment, providing forward motion.