Posts Tagged ‘Ovum’

  • Sperm fertilizing egg

    Jul 24, 12 • 5368 Views • HEALTHNo Comments

    Illustration of a human sperm fertilising an egg. The picture shows the size difference between the egg, or ovum, & the spermatozoon. Human spermatozoa are extremely elongated single cells about 65 micrometres long, divided into 3 main regions: a head,...