If women do not take contraceptive measures before having sexual intercourse, it is easy for them to become pregnant. Most women choose birth control pills or condoms. Generally speaking, this method of ejaculation outside the body is not safe. If there is sperm on your hand and it touches the vagina, the chance of pregnancy is not very high, because male sperm generally loses its activity after half an hour in a dry environment. Sperm is divided into animal sperm and plant sperm. Male cells in the process of sexual reproduction in animals, reproductive cells of male animals, male gametes in heterogametic reproduction, haploid reproductive cells produced by the spermatozoa. In real life, sperm refers more to the mature reproductive cells of men, which are formed in the testis. Semen is an organic substance. Semen contains fructose and protein, as well as some enzymes, inorganic salts and organic salts. Sperm morphology varies depending on the plant species, including biflagellate sperm, multiflagellate sperm and aflagellate sperm. Primitive terrestrial plant mosses and lower vascular plants Lycopodium and Selaginella generally have biflagellate sperm; Isoetes, Equisetum, Pteridophyte and gymnosperms such as Cycads and Ginkgo have multiflagellate sperm. The normal male sperm should be milky white or light yellow, but due to physiological and pathological factors, the male sperm will be affected and turn yellow. Generally speaking, the yellowing of male sperm is temporary and will disappear in a short time. However, if the yellowing of sperm is caused by pathological factors, men need to go to a regular hospital for examination and treatment as soon as possible to prevent the condition from worsening. After a man's sperm turns yellow, the quality and quantity of his sperm will be significantly affected, and his fertility will also decline along with the decline in sperm quality, leading to the serious consequence of male infertility. Many people know that sitting for long periods of time is not good for male reproductive health and may damage sperm. In fact, standing for a long time is also not good for men's health. Men working as teachers or in the service industry need to pay more attention. Standing for a long time can easily cause poor testicular venous blood return, which can be retained in the blood vessels and cause obstruction of the spermatic vein in the scrotum. |
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