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Sperm and life

Semen is a sperm carrier produced in the male reproductive system. The sperm takes almost three months to mature, and they have short lifespans outside of the male body. Those sperm that make their way into the female reproductive system last longer than those that do not. The typical semen lifespan begins in the male testes. This process starts at puberty and creates about 1, sperm a second from then on. Semen is the entire product of the male reproductive system, and it includes both the cells that fertilize the female egg, which are sperm, and the fluid that carries the sperm, known as seminal fluid.
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Sperm: The secrets of success

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NOVA Online | Life's Greatest Miracle | Watch the Program Here (Teachers)

The consensus on human sperm facts about the human sperm life span of male sperm appears to be between one and three hours outside the human body in the open air, depending on moisture, temperature and how much sperm is present. How long is the lifespan of sperm inside the female body is another matter. Sperm lifespan inside a female body can range from between five and seven days. An interesting human sperm fact is that the sperm is the smallest cell in the body, whilst the female egg is the largest. It would take , sperm to weigh as much as a female egg.
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The Fern Life Cycle

Healthy sperm aren't always a given. Understand how lifestyle factors can affect your sperm and what you can do to improve your fertility. If you and your partner are planning a pregnancy, you might be wondering about the health of your sperm. Understand the factors that can affect male fertility — then consider steps to help your sperm achieve your goal. The male reproductive system makes, stores and moves sperm.
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A new chemical treatment that can segregate male and female sperm could one day mean parents going through IVF could choose whether they have a boy or girl. Scientists discovered the sperm with the X chromosome which gives rise to females slowed down when when a certain chemical was added while sperm with the male Y chromosome sped up. In experiments with mice sperm, scientists found they could produce litters that were 90 per cent male, according to the study published in Plos Biology. When the slower sperm were used, litters were 81 per cent female. The X chromosome has many genes while the shorter male Y chromosome has fewer, and this difference in gene expression meant scientists could distinguish between the two.
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Your comments (7)

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