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Sperm in sentence

153 examples of Sperm in a sentence

Male and female condoms prevent sperm from coming into contact with the vaginal space.
A spermicide is a chemical that immobilizes and destroys sperm.
If there isn't an egg available in the fallopian tube, there's nothing for sperm to fertilize.
Some also contain copper, which disable sperm while also making egg implantation in the uterus difficult.
In the meantime, there are quite a few options to block sperm, disable them, or suppress eggs and keep them out of reach.
A penis deposits a bit of sperm and a vagina receives it and delivers it to the egg.
That's because genitalia do more than just deposit and receive sperm.
For instance, in some dung flies, the vagina contains pockets for separating sperm from different males depending on how appealing they were.
Males using their penises for courtship and females controlling their own sperm management are two reasons why genitalia evolve into such complex shapes.
A female's interests are best served if she fertilizes her eggs with the sperm of the best fathers and creates genetic variability amongst her offspring.
For him, it would be best if a female used his sperm to fertilize all of her eggs.
Black widow spiders have a disposable penis tip that breaks off inside the vagina blocking the attempts of his rivals, and bed bug males bypass a female's genitalia altogether using a syringe-like penis to inject sperm cells directly into her belly.
That allows them to maintain the power to filter out unwanted sperm with their genitalia.
Shall we tell our child about the sperm donation?
We interviewed couples who received fertility treatment at Ghent University Hospital, using sperm from a donor.
We included heterosexual couples, where the man for some reason did not have good-quality sperm, and lesbian couples who obviously needed to find sperm elsewhere.
If the egg is not fertilized by sperm within 24 hours, the unfertilized egg will die, and the entire system will reset itself, preparing to create a new egg and uterine lining the following month.
The zona thwarts the entry and fusion of more than one sperm, the smallest cell in the body.
It takes a man two to three months to make sperm, and the process constantly renews.
Each ejaculation during sexual intercourse releases more than 100 million sperm.
Most sperm samples are produced by masturbation.
In the first, the eggs are incubated with thousands of sperm and fertilization occurs naturally over a few hours.
The second technique maximizes certainty of fertilization by using a needle to place a single sperm inside the egg.
This is particularly useful when there is a problem with the quality of the sperm.
That is, the sperm will swim toward the ligand.
Are sperm aided in finding the egg by sniffing out the area with the highest ligand concentration?
I like this example because it clearly demonstrates that an olfactory receptor's primary job is to be a chemical sensor, but depending on the context, it can influence how you perceive a smell, or in which direction sperm will swim, and as it turns out, a huge variety of other processes.
Some orchids make such convincing mates that insects even ejaculate on them, wasting valuable sperm.
They get paid by pollen and nectar, to move that male sperm, the pollen, from flower to flower.
He said, "If I keep tossing myself off I get fresh sperm being made."
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