STRUCTURE OF A SPERM

• It is a microscopic, motile structure composed of a head, neck, a middle piece and a tail.
• Whole body is covered by plasma membrane.
• The sperm head contains an elongated haploid nucleus and the anterior portion is covered by a cap-like structure acrosome
• The middle piece contains numerous mitochondria which produce energy for sperm motility needed for fertilization.
• Tail helps the sperm cell to swim to reach the egg cell.
• Seminal plasma along with sperm constitutes the semen.

Fig. structure of a sperm