Penis and sperm and semen

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Sometimes the things you'd never bring up in polite company are the most interesting. Case in point: semen. It's one of those sex -related subjects that's shrouded in so much mystery, it becomes even more intriguing.

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BuzzFeed Science had the opportunity to chat about semen with Dr. It turns out semen is pretty freaking baller, and we have the facts to prove it. Spermatazoa, or sperm, is the name given to the reproductive cell that looks like a tadpole.

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Unlike the female genitaliathe male reproductive organs are on both the interior and the exterior of the pelvic cavity. They include:. Sperm production occurs in the testicles.

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Ejaculationthe release of sperm cells and seminal plasma from the male reproductive system. Ejaculation takes place in two phases: in the first, or emission, stage, sperm are moved from the testes and the epididymis where the sperm are stored to the beginning of the urethraa hollow tube running through the penis that transports either sperm or urine; in the second stage, ejaculation proper, the semen is moved through the urethra and expelled from the body. Sperm cells that are stored in the male body are not capable of self-movement because of the acidity of the accompanying fluids. When the sperm receive fluids, called seminal plasmafrom the various internal accessory organs prostate glandejaculatory ductsseminal vesiclesand bulbourethral glandsthe acidity decreases.

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The organs and structures of the male reproductive system give men the ability to fertilise a woman's egg ovum to produce a baby. The scrotum, or scrotal sac. This is the loose bag of skin which hangs under the main body cavity between the upper thighs.

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Anyone can experience blood in their semen, also called haematospermia hee-ma-toh-sperm-ee-ahat any time after puberty. At orgasmsperm and fluid semen travel from the testicles, through the urethra the tube that connects the bladder with the penis and out of the tip of the penis. Bleeding can happen anywhere along the way, and the semen can have a brown or red colour.

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The penis grows enlarged and firm, the skin of the scrotum is pulled tighter, and the testes are pulled up against the body. As sexual arousal and stimulation continues, the glans of the erect penis will swell wider. As the testes continue to rise, a feeling of warmth may develop around them and the perineum.

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Reproduction is the process by which organisms make more organisms like themselves. But even though the reproductive system is essential to keeping a species alive, unlike other body systems, it's not essential to keeping an individual alive. In the human reproductive process, two kinds of sex cells, or gametes GAH-meetzare involved.

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Retrograde ejaculation occurs when semen enters the bladder instead of emerging through the penis during orgasm. Although you still reach sexual climax, you might ejaculate very little or no semen. This is sometimes called a dry orgasm.

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