10 Facts You Didn’t Know About Sp.erm

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•The Majority of Sp.erm is Abnormal

Humans aren’t great at making sp.erm. In fact, over 90 percent of any given expulsion is malformed. As monogamous animals our sp.erm does not have to be perfect since the sperm is typically not competing against another person’s sperm.

10 Facts You Didn’t Know About Sp.erm 2

•Sp.erm Factory

Although there’s a large turnover of sp.erm, the latest studies suggest that sp.erm takes more than two whole months to form.

•Mister Acrosome, Tear Down This Wall!

Sp.erm wears a helmet that allows it to fertilize the egg. The helmet is called an acrosome. When the sp.erm hits the egg the acrosome releases chemicals that melt the surface of the egg so that the sp.erm can enter.

•One Testicle is A-OK

If someone is born without a testicle, or there is an accident, that person can still conceive. In fact, the other testicle usually grows in order to compensate. Lance Armstrong has had two naturally conceived children since he lost a testicle to cancer.

•Father-to-Son

The Y chromosome is the chromosome that makes a male a male. Every other chromosome in the body is a combination of your mother’s genes and father’s genes, but the Y chromosome cannot be mixed. So a male’s Y chromosome is identical his father’s Y chromosome, and his father’s Y chromosome, and so on.

•Can’t Stop, Won’t Stop

Women are born with all the eggs they will ever have and usually in their middle age they’re done being fertile. Men, on the other hand, are always producing sp.erm. Of course, the quality of the sp.erm does degenerate a bit with age.

•Unknown Intruder

Created late in human development, or puberty, sp.erm cells could be attacked by the immune system because they are unknown. Luckily, there are cells that surround and protect the sp.erm so that they aren’t attacked.

•The Sp.erm is Just the Vehicle

We often think we’re a sp.erm/egg combination that grew. But the sp.erm is irrelevant. Researchers kill the sp.erm when creating test-tube babies and then they inject the dead sp.erm into the egg. The DNA inside the sp.erm is the only thing the egg needs.

•Stay Cool

For the sake of the fragile sp.erm, testicles have to stay about seven degrees cooler than the rest of the body. That’s why testicles hang outside of the body. When testicles shrink in the cool weather it’s just to get more body warmth.

•The Entire Population of Brazil

Each expulsion is only about half of a teaspoon. Not much, right? Actually, there are 200 million sp.erm in each expulsion and all of them are competing to fertilize the egg. That’s two-thirds of the population of the United States!

                                                

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