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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.
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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. 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. Hottest Gf Cumshot & Cumplay Compilation, Huge Sperm Loads 2 5 months ago 10:20 xHamster compilation, cum in mouth, sperm, cumshot compilation, orgasm compilation.Spermatozoa, in this case human, are a primary component in normal semen, and the agents of fertilization of female ova.Asian hot wife Kalina Ryu gives insane deepthroat blowjob 5 months ago 05:01 SunPorno cum in mouth, wife, gagging.Horny Stepsisters Cum In Mouth Compilation p9 3 weeks ago 08:19 Pornicom big tits, teen (18+), cumshot compilation, milf, teen anal (18+) HD.Best Gf Cumshot And Cumplay Compilation #3, Massive Drool 3 months ago 09:47 xHamster cum in mouth, compilation, cumshot compilation, sperm, orgasm compilation.Oral Sex sex with a tall gal, cum 3 times.Teens Cum In Mouth Compilation 11 months ago 10:30 AlotPorn cum in mouth, cumshot compilation, compilation.Ĭum in mouth, cum in throat!!! Girlfriend know as suck 3 weeks ago 18:53 BigTitsLust tall, girlfriend, big tits, cum in mouth, blowjob HD.Cum In Mouth Compilation 3 years ago 07:45 TXXX cum in mouth, cumshot compilation, creampie compilation, gangbang.Primera vez haciendo Oral internal ejaculation, me lo trago todo 5 months ago 05:15 HDSex cum in mouth HD.Superlatively Good Deepthroat with BIGGEST SPUNK FLOW IN HER THROAT.Young chick gets sex tutored by her old teacher.įill my Mouth with Cum! 4K 60FPS 1 year ago 07:25 FreePorn8 cum in mouth HD.Large cock in her mouth till she gets it filled with cum 7 years ago 04:44 MyLust cum in mouth.MyDirtyHobby - Super Hot Stunner LinaLynn Uses Her Fresh Camera To Film Her Fresh Point Of View Lovemaking Episode 1 month ago 07:18 UiPorn cum in mouth HD.Sucks a huge dick and lubricates it with breast milk 1 year ago 06:59 BravoTube cum in mouth, milk, swallow.Gorgeous white babe Evelina Darling sucks a very long black penis 1 year ago 13:59 OkXXX cum in mouth, black HD.Insatiable Becky Bandini and Katya Rodriguez have sex with a young stud 1 week ago 07:48 MegaTube cute, threesome, big tits, blowjob, tall HD.Homemade cum in mouth compilation! Best Sex tape 2 years ago 17:18 HClips cum in mouth, swallow, homemade, handjob compilation, compilation.I WAKE UP my Friends MOM and I CUM in her MOUTH! 4k 6 months ago 10:32 MomVids cum in mouth HD.
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