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Ejaculation |
 | | When a male ejaculates his muscles contract, and sperm and semen mix and are pushed into the urethra and come spurting out of the opening in the glans, or tip, of the penis. |
| | Stopping the ejaculation, by covering the end of the penis with a finger or thumb, can cause "retrograde ejaculation," which means the semen travels back up the urethra and can be forced up the tube that leads to the bladder, or forced into the prostate gland. |
| | A wet dream is a term to describe an ejaculation from the penis during sleep. |
| www.pamf.org /teen/health/malehealth/ejaculation.html (425 words) |
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