Spermatozoa
are a unique specialization of cells in men. A good way to
describe a sperm cell is to think of it as an Apollo space
shuttle, as each is comprised of three essential components;
capsule, fuel tank, and propulsion unit. |
The
main function of the sperm is to carry the 18,000 male genes
to the female’s egg, just as the Apollo capsule carries
the astronauts on their mission. These genes represent the
male's contribution to the DNA make-up of the hoped-for
baby. The capsule also has a unique surface feature in its
membrane which allows it to burrow through the shell of
the woman's egg. Using the enzymes that are built into its
surface, the sperm cell digests its way through the outer
eggshell called the zona pellucida. The sperm cell is then
able to enter into the main part of the egg, the ooplasm,
achieving successful fertilization.
|
The
second component of the sperm cell is the energy source. Think
of this as the rocket's fuel tank, its sole purpose is to
convert nutrients into energy. Without this the propulsion
system would not have the energy to take the cell up the female
genital track.
The
third and final component of the sperm cell is the propulsion
system. It is the whip-like structure of the sperm tail. It
serves the important function of propelling the sperm cell
forward with a snake-like motion. It is critical that sperm
move forward and not laterally or in circles. The failure
of sperm to move forward is described as an abnormality of
sperm motility. |
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The
statements on this site have not been evaluated by the Food
and Drug Administration. This product is not intended to diagnose,
treat, cure or prevent any disease. Copyright © 2003 Applied
Medical Systems, Inc. and its licensors. All rights reserved |
