cycle of sperm

Sperm – male germ cells , which is necessary for fertilization . Human Sperm consists of a head, middle section and tail ( flagellum ) , through which a male germ cell performs motion. When moving spermatozoon rotates on its axis , and the average speed is 30 inches per hour. Approximately 1-2 hours after intercourse sperm reach the fallopian tubes, where fertilization occurs . Continue reading