Male sperm cells

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Getting to grips with the numbers behind the man's part of the reproductive system. 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.
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Sexy Swimmers: 7 Facts About Sperm | Live Science

But the problem, say the experts, is that the reasons for male infertility are largely unknown. One would think that not understanding male infertility would drum up support for more research. After all, the future of the human race depends on it. But researchers say that is not the case.
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4 Ways to Make Your Sperm Stronger, Faster, and More Fertile

With every ejaculation, men produce around million sperm cells. How much do you know about these wiggly little cells? Read on for 7 surprising facts about sperm. Want supercharged sperm, or just a nudge to the slow guys?
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Sperm is the male reproductive cell. In the types of sexual reproduction known as anisogamy and its subtype oogamy , there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. A uniflagellar sperm cell that is motile is referred to as a spermatozoon , whereas a non-motile sperm cell is referred to as a spermatium. Sperm cells cannot divide and have a limited life span, but after fusion with egg cells during fertilization, a new organism begins developing, starting as a totipotent zygote. The human sperm cell is haploid , so that its 23 chromosomes can join the 23 chromosomes of the female egg to form a diploid cell.
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