Reproductive Systems Male and Female. Uncomfortable Words? Penis Testis Scrotum Sperm tube Gland...
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Transcript of Reproductive Systems Male and Female. Uncomfortable Words? Penis Testis Scrotum Sperm tube Gland...
![Page 1: Reproductive Systems Male and Female. Uncomfortable Words? Penis Testis Scrotum Sperm tube Gland Vagina Ovary Uterus Cervix Egg tube.](https://reader035.fdocuments.us/reader035/viewer/2022081514/56649e5e5503460f94b57c16/html5/thumbnails/1.jpg)
Reproductive Systems
Male and Female
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Uncomfortable Words? Penis Testis Scrotum Sperm tube Gland
Vagina Ovary Uterus Cervix Egg tube
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Male system
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Scrotum The testes are inside a sac called the
scrotum. It hangs outside the body, keeping the
sperm cool. Sperms only develop properly in cool
conditions.
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Sperm tube Sperms are produced all the time. They are stored in small tubes outside the
testes. Eventually they pass along a much bigger
tube called the sperm tube.
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Glands Glands add a fluid which keeps the sperms
alive. The sperms and the fluid are called semen.
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Penis The penis must be erect for the semen to pass
out. This happens when blood is pumped into special
spongy tissue in the penis.
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Sperm During an ejaculation semen is pumped out of the
penis – due to a contraction of the muscles around the sperm tubes.
Each ejaculation makes about a teaspoon of semen but this can contain:
500 million sperms.
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Female System
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Ovaries The ovaries are the female sex organs. They produce the eggs. They also make the female hormones
oestrogen and progesteron (between 10 and 15 years).
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Egg tube An egg is released about every 28 days. The egg passes out of the ovary and moves
into the egg tube. This is called ovulation and is when an egg
may become fertilized.
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Uterus The egg slowly moves down towards the
uterus (womb). If sperms are present in the egg tube the
egg will be fertilised. If the egg is not fertilised it will dies after
about a day.
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Cervix The lower end of the uterus has a ring of
muscle called the cervix. It leads to a muscular tube called the
vagina that opens to the outside of the body
.
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