Life science sperm

Duration: 14min 19sec Views: 1779 Submitted: 09.03.2021
Category: Trans Male
Mike Leahy - writing with Hilary McQueen - gets to grips with the numbers behind the man's part of the reproductive system - sperm. Although I'm a biologist, I rarely think much about what the cloudy white stuff contains, but in fact semen is far more complex than my endearing childhood image of mini tadpoles swimming around in thin wallpaper paste. There are many features of human semen that are very familiar to most people, but their importance isn't appreciated. For a start, the ejaculate isn't of a uniform consistency. As the man ejaculates, the first 'spurt' contains far more sperm than subsequent spurts. This is why the withdrawal method of contraception is so dangerous.

Scientists Say: Egg and sperm

Sperm - Molecular Biology of the Cell - NCBI Bookshelf

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. Sperm are unique cells, produced through the complex and precisely orchestrated process of spermatogenesis, in which there are a number of checkpoints in place to guarantee delivery of a high-quality and high-fidelity DNA product. On the other hand, reproductive pressure in males means that to produce more is, in very general terms, to perform better.

What to know about sperm

NCBI Bookshelf. Molecular Biology of the Cell. New York: Garland Science;
Males produce millions of these cells each day, yet it takes only one to fertilize an egg and create a life. This article outlines what sperm are, where they originate, and the factors affecting their ability to fertilize an egg. Sperm is the male reproductive cell or gamete. When a sperm combines with a female gamete, or egg, it results in a human embryo. When studying a sperm cell under a microscope, scientists can typically identify the following three parts:.