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Sperm Cell

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by

Gio PG

on 8 January 2015

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Transcript of Sperm Cell

What is Sperm?
The Sperm Cell is what makes humans able to reproduce along with animals. The cell can live up to five days max. The one and only purpose of the Sperm Cell is to fertilize the egg cell so animals and humans can reproduce. The human male body also takes two weeks to make sperm.
Reproduction
Once a sperm fuses with an egg cell, the chromosomes swap pieces of DNA, meaning that each becomes a mix of your parents DNA. Did you know that most Sperm Cells the male body makes are deformed. Two heads. Two tails. Huge or pinned heads. The list of deformities is huge!
How are Sperm Built?
Did you know that sperm wear hats? Well, not really a hat but an oval-shaped structure called the acrosome. It contains strong chemicals that are released once the sperm is in the egg. The chemicals melt the egg's outer surface, drilling a hole so that the sperm can go through the egg to release its genetics and to stop the other sperm from coming in.
Did you Know?
If a guy loses one testicle, the other is generally able to make enough sperm to create a baby. Often the remaining testicle grows a bit to boost sperm output. Lance Armstrong, is perhaps the most high profile person to have lost a testicle to cancer. He has fathered five children since then. It takes only one sperm cell to fertilize a woman's egg cell, but it is a hard battle for the sperm. Every cycle there are about 200 million sperm. And they are all fighting for one spot too!
REALLY?
Women are born with all the eggs they'll ever have. It's different for men. Men produce sperm all day, every day throughout their lives. As men age, their sperm may become a little slow but the factory never closes. Sperm are far too tiny to see with the naked eye. How tiny? Each one measures about 0.002 inch from head to tail. Of course, what sperm lack in size they more than make up in numbers.
Fun Facts
Sperm Cells
Anastasia & Gio
Sperm can certainly whip their tails, but many have a hard time swimming in a straight line, only about half do. The rest swim around in circles and can't travel anywhere. But because so many start their journey, plenty make it to the egg. About 7 degrees Fahrenheit cooler than the ordinary body temperature is just right for producing healthy sperm. Also, a dead sperm cell can be regenerated and fertilized to make a live baby. The average human male creates about half a teaspoon of sperm every cycle it goes through too. If a guy could make all the sperm from one cycle to line up end to end, they'd stretch six miles!
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