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Artificial insemination is the introduction of sperm into the reproductive tract of a female by means other than sexual intercourse for the purpose of impregnating the female. [12] In humans, artificial insemination may be used when a woman or her normal sex partner cannot, for any of a number of reasons, conceive by natural means.
A breeding mount with built-in artificial vagina used to collect semen from horses for use in artificial insemination. Semen collection refers to the process of obtaining semen from human males or other animals with the use of various methods, for the purposes of artificial insemination, or medical study (usually in fertility clinics).
The first recorded case of artificial insemination was John Hunter in 1790, who helped impregnate a linen draper's wife. [1] [2] The first reported case of artificial insemination by donor occurred in 1884: William H. Pancoast, a professor in Philadelphia, took sperm from his "best looking" student to inseminate an anesthetized woman without her knowledge.
A comparative study between women who had consensual vaginal sex and victims of rape found that in consensual sex, 6.9 percent of women had genital injuries. Among women who were raped, 22.8 percent suffered genital injuries. [74] In men, there is a risk of penile rupture if the penis is bent when erect. This is a case of medical emergency.
Human reproduction naturally takes place as internal fertilization by sexual intercourse. During this process, the man inserts his erect penis into the woman's vagina and then either partner initiates rhythmic pelvic thrusts until the man achieves orgasm , which leads to ejaculation of semen containing sperm into the vaginal canal.
Many details must be discussed between the artist and scientist before a final drawing can be completed, and additional preliminary drawings must be prepared in order to work out aesthetic details. Pen and ink (often a flex nib fountain pen) line illustrations are clean, crisp, clear, and inexpensive to produce, making them ideal for biological ...
When they find a female they bite into her skin, releasing an enzyme that digests the skin of their mouths and her body and fusing the pair down to the blood-vessel level. The male then slowly atrophies , losing first his digestive organs, then his brain, heart, and eyes, ending as nothing more than a pair of gonads , which release sperm in ...
The human female reproductive system is made up of the internal and external sex organs that function in the reproduction of new offspring. The reproductive system is immature at birth and develops at puberty to be able to release matured ova from the ovaries , facilitate their fertilization , and create a protective environment for the ...