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How it happens[ change change source ] Ejaculation example Before a man can ejaculate, his penis needs to be stimulated. The penis is usually soft, quite short and hangs down. When a man is stimulated, for example by seeing another naked person, masturbating or being touched by someone else sexually, the inside of his penis fills with blood. Girls jizzing nude causes it to become longer, thicker, Girls jizzing nude and to stand upright, and is called having an erection. Men can be stimulated for different amounts of time Girls jizzing nude they ejaculate. Ejaculation takes place in two stages. The first stage is called emission which means "the act of sending or throwing something out".

A man's testicles make sperm cellsand these are stored in a coiled tube called the epididymis. During emission, the two ducts tubes called the vasa deferentia each tube by itself is called a vas deferenswhich carry sperm away from the testicles, squeeze the sperm from the epididymis to the top end of the ducts. When this happens, the man feels that he cannot stop his ejaculation. It is sometimes said that the man has reached the "point of no return". The sperm then passes through other tubes called the ejaculatory ductswhere they are mixed with fluids made by glands called the seminal vesiclesthe prostate and the bulbourethral glands Girls jizzing nude called Cowper's glands.

Glands are special body organs that make chemicals. The mixture of sperm and fluid is called semen or ejaculate. It is white Girls jizzing nude yellowish, and sticky. The second stage is called ejaculation proper which means "real ejaculation". When ejaculation proper begins, the man starts having an orgasm. A muscle at the base of the man's penis called the bulbospongiosus muscle squeezes strongly again and again. This forces semen to move from Girls jizzing nude ejaculatory ducts into the urethrawhich is a duct that passes right through the penis. Semen is pushed along the urethra until it shoots out of the end of Girls jizzing nude penis in spurts.

During an orgasm, the man's muscle will usually squeeze about 10 to 15 times. The squeezes happen very quickly. They start at about 0. Most of the semen is ejaculated in the first few squeezes. How strong an ejaculation is varies from man to man. For some men the semen shoots out of their penis very far, while for others it dribbles out. An ejaculation is often stronger if a man has been stimulated for a longer time. The squeezing of the man's muscle gives a very good feeling to his penis and his groin area the part of his body where his torso joins the top of his legs. A man's orgasm usually lasts about 17 seconds,[ source?

He may also have an enjoyable and relaxing feeling in his groin area. It takes some time before he can have another erection and ejaculation. This time is called the refractory period. The average refractory period is about half an hour. Younger men normally have a shorter refractory period than older men. Men who are 18 years old have a refractory period of about 15 minutes, while men in their 70s have one of about 20 hours. Most young and middle-aged men can probably have about two to three ejaculations in a few hours, but it has been said that some men are able to have up to nine ejaculations a day.

If a man cannot ejaculate after having been aroused for a long time, even though he wants to, this is called delayed ejaculation or anorgasmia. A man who is unable to ejaculate at all is said to have anejaculation. Some men are able to have an orgasm without ejaculating. This is called a dry orgasm. Apart from giving a man pleasure, ejaculation may help a man stay healthy. A study carried out in Australia seemed to show that men who ejaculate often have less chance of getting prostate cancer. Semen Some semen on a piece of glass. Semen is a white or yellowish, and sticky fluid that contains sperm.

Semen is known informally as cum, jism or jizz. Men ejaculate different amounts of semen. Normally, an ejaculation makes between 1. Older men produce less semen. If a man ejaculates an unusually small amount of semen, this is a medical condition called hypospermia. Semen is usually a white or yellowish fluid. It starts off being slightly thick and sticky, then after a while it becomes more watery. Semen contains many chemicals. These include citric acidfructose a type of sugarenzymes that speed up chemical reactions in the body, lipids substances that fat is made ofand slippery fluids that help the semen to move through the urethra.

The number of sperm in an ejaculation of semen depends on many things. There may be more sperm if: If there are an unusually low number of sperm in an ejaculation, this is called oligospermia. If there are no sperm at all, this is called azoospermia. A man with oligospermia or azoospermia is usually infertileand cannot or finds it very hard to make a woman pregnant by having sex with her. If a man has a sexually transmitted infection or STI an infection that is passed from one person to another by sexthe germs that cause the disease can appear in his semen. If the person that the man has sex with touches the semen, he or she can become infected by the germs and pick up the disease.

One of the ways for a man to lower the chance of passing on an STI to his sexual partner is to wear a condom on his penis when having sex. Fertilization When a man has sexual intercourse with a woman, he places his penis within her vagina and moves his penis back and forth, typically in a thrusting motion, while the woman moves her hips. The vagina is warm and somewhat moist, and it places pressure on the man's penis. These sensations, combined with the friction caused by the in-and-out movements, stimulates the penis, which causes the man to have an orgasm and to ejaculate.

If the woman is using birth control this will usually not cause her to become pregnant. Otherwise, the sperm in the semen can travel into the woman's uterus and Fallopian tubes. If there happens to be an ovum or egg cell in a Fallopian tube, a sperm may fuse with the ovum. This is called fertilizationand makes the woman pregnant. However, before a man ejaculates, a clear, colourless, sticky fluid called pre-ejaculate also known as pre-ejaculate fluid or informally as pre-cum can come out of his penis. Pre-ejaculate is produced by the bulbourethral or Cowper's glands. Some tests have shown that pre-ejaculate does not contain any sperm. Also, if a man ejaculates near the woman's vagina and semen falls on her body, sperm can accidentally enter the vagina and cause a pregnancy.

To avoid the woman becoming pregnant when she does not want to, the man and the woman can use methods of contraception or birth control. For example, the man can wear a condom on his penis, or the woman can take birth control pills. First ejaculation[ change change source ] Young boys cannot ejaculate. A boy's first ejaculation usually happens about one year after he begins pubertywhich is when his body starts changing into a man's body. The first time a boy ejaculates usually happens when he is asleep. This is called a nocturnal emission which means "an emission happening at night" or a wet dream.

It happens without the boy's control, often when he is having a dream about sex. It is usually clear and stays sticky. It either has no sperm in it, or sperm that do not move properly or do not move at all. A boy's semen only becomes like an adult man's semen about two years after his first ejaculation. Although it was common at the end of the 19th century and the start of the 20th century to call such terms "ejaculations", today it is considered old-fashioned.




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Younger men normally have a shorter refractory period than older men.

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Men who are 18 years old have a refractory period of about 15 minutes, while men in their 70s have one of about 20 hours. It is usually clear and stays sticky. A muscle at the base of the man's penis called the bulbospongiosus muscle squeezes strongly again and again. It takes some time before he can have another erection and ejaculation.