human sperm cell (spermatozoon).

mobile human sperm cell spermatozoon male reproductive responsible fertilizing female egg microscopic highly specialized whip-like tail called flagellum enables swim head genetic material including father's dna combines mother's successful fertilization cell sperm structure spermatozoon spermatozoa acrosome anatomy axoneme biology color splash education fertility gametes histology germ cells sterility mammalian man medical medicine morphology flagellum neck test student