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The prostatic secretion, influenced by dihydrotestosterone, is a whitish (sometimes clear), thin fluid containing proteolytic enzymes, citric acid, acid phosphatase and lipids. The seminal vesicles produce a yellowish viscous fluid rich in fructose and other substances that makes up about 70% of human semen. Human Compositionĭuring the process of ejaculation, sperm passes through the ejaculatory ducts and mixes with fluids from the seminal vesicles, the prostate, and the bulbourethral glands to form the semen. In marsupial and placental mammals, copulation occurs through the vagina. In most vertebrates, including amphibians, reptiles, birds and monotreme mammals, copulation is achieved through the physical mating of the cloaca of the male and female. Internal fertilization takes place after insemination of a female by a male through copulation. Female fish, for example, spawn ova into their aquatic environment, where they are fertilized by the semen of the male fish.ĭuring internal fertilization, however, fertilization occurs inside the female's sexual organs. In external fertilization, the spermatozoa fertilize the ova directly, outside of the female's sexual organs. Cryoconservation of animal genetic resources is a practice that calls for the collection of genetic material in efforts for conservation of a particular breed.ĭepending on the species, spermatozoa can fertilize ova externally or internally. In animals, semen has been collected for cryoconservation. Semen is also a form of genetic material. The fluid is designed to be discharged deep into the vagina, so the spermatozoa can pass into the uterus and form a zygote with an egg.
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In humans, seminal fluid contains several components besides spermatozoa: proteolytic and other enzymes as well as fructose are elements of seminal fluid which promote the survival of spermatozoa, and provide a medium through which they can move or "swim". The process that results in the discharge of semen from the urethral orifice is called ejaculation. Semen is produced and originates from the seminal vesicle, which is located in the pelvis. It is secreted by the gonads (sexual glands) and other sexual organs of male or hermaphroditic animals and can fertilize the female ovum. Semen, also known as seminal fluid, is an organic bodily fluid created to contain spermatozoa. I hope both you and your partner communicate and consider ways to enjoy connection, intimacy, and pleasure with one another while practicing harm-reduction measures.Spermatozoa, in this case human, are a primary component in normal semen, and the agents of fertilization of female ova. Unfortunately, there is no such thing as completely safe sex with another person, but compared to the incidence of other things (car crashes, gun shots, food poisoning.) HIV and STI risks can be very successfully mitigated. Condoms can reduce the possibility of getting an STI, but not eliminate it, especially if they are not used for EVERY oral and anal encounter.īeyond HIV and STIs, I'm not sure what "safe" or "risk" mean to you. Of course, there are many STIs out there just looking for some moist mucous membranes to inhabit.
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Now - as many will point out, there are other things one can worry about other than HIV. Also as the insertive partner (the "top"), your own risk of acquiring HIV is less than 1%, with or without PrEP (). PrEP reduces risk of acquiring HIV by at least 99% ().
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A great way to mitigate this risk would be for you both to get tested together, and if you are HIV negative, to consider if PrEP right for you. Condomless anal sex could put you at risk of acquiring HIV if your partner was HIV positive and detectable. Let's say, for instance, that you are asking about HIV risk. The answer to that would rely solely on what your concerns are, and how you've already mitigated these concerns. It sounds like your partner is asking you to share this pleasurable contact with him. Experiencing cum exchanges between two people can be an emotionally powerful and spiritually meaningful experience.