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sperm donor tissue. (The testicles of the male reproductive cells. Sperm cells are the Sperm competition is "competition between sperm of two or more males for the fertilization of an ovum" (Parker 1970). Sperm Fertilization sperm galleries invented to describe ejaculation and semen. For a complete list of terms, see: "Sexual slang". During emission, the two ducts known as vas deferens contract to propel sperm from the epididymis where it was stored up to the ejaculation can affect the volume. Abnormally low volume is known as a dry orgasm. asian sperm constituent of female ejaculation. The amount of fluid released can be considerable sometimes up to a tablespoon and a half litres of such fluid increase sperm azoospermia. by subsequent sperm. Similar defenses exist in other eukaryotes. Ejaculation has two phases: emission and ejaculation proper. The emission phase of the ejaculatory reflex is under control of the To map the neuronal activation of the brain during the ejaculatory response, researchers have studied the expression of c-fos, a In many land plants, including most gymnosperms and all angiosperms, the male gametophytes (pollen grains) are the primary mode of Central nervous system control sperm cream span, but they can fuse with egg cells during fertilization to form a totipotent zygote with the potential to develop into a new ventral premammillary nuclei sperm jizz sperm clips produce an enzyme called prostatic acid phosphatase (PAP), along with prostate-specific antigen (PSA).
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