Phase Contrast Sperm Photo Researchers

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=tsOzke3Msh4

Phase contrast cinemicrography of swimming human spermatozoa. Each sperm, (spermatozoan), has a rounded head, (5 micrometers by 3 micrometers), and a long tail, (50 micrometers long), which it uses to both swim and burrow into the egg. The tail propels the sperm cell at about 1 to 3 millimeters per minute by whipping in an elliptical cone. Fertilization occurs when a sperm's genetic material, (deoxyribonucleic acid, DNA), fuses with an egg's DNA, forming a zygote. • ©Sinclair Stammers / Photo Researchers, Inc. • http://db2.photoresearchers.com/sperm...

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