精子活力干劲英文

精子sperm英:[spɜːm]美:[spɜːm]词典:spermspermatozoonspermium例句:只需要一个精子就能让卵子受精。It only takes one sperm to fertilize an egg.

What is the difference between sperm and semen?Answer:Semen or seminal fluid is the whitish viscous fluid emitted from the male reproductive tract that contains sperm & liquids (seminal plasma) that help keep them viable. Sperm cells, produced by the testes in humans, represent 2 to 5 percent of semen volume; fluids from tubules, glands, & storage areas of the reproductive system bathe them as they travel down, nourishing them, keeping them motile, or participating in certain chemical reactions. During ejaculation, liquids from the prostate gland & seminal vesicles dilute the sperm & provide a suitable, slightly alkaline environment. An average ejaculation of a human male expels 0.1 to 0.3 cubic inches (2 to 5 ml.), containing 200 to 300 million sperm.Sperm is the smaller, usually motile male reproductive cell of most organisms that reproduce sexually. Sperm cells are haploid (they have 1/2 the No. of chromosomes as the other cells in the organism's body). Sperm often have at least 1 flagellum. During fertilization, the nucleus of a sperm fuses with the nucleus of the much larger oocyte (the female reproductive cell) to form a new organism. In male animals, sperm are normally produced by the testes in extremely large numbers in order to increase the chances of fertilizing an egg. Motile sperm cells produced by some multicellular protist groups (such as the algae), the bryophyte plants, & the seedless vascular plants, require water to swim to the oocyte. In gymnosperms and angiosperms, sperm do not need water for mobility but are carried to the female reproductive organs in the pollen grain. In the cycads and the gingko (both gymnosperms), the sperm are motile & propel themselves down the pollen tube to reach the egg cell. In the conifers and angiosperms, the sperm are not themselves motile but are conveyed to the ovule by the growing pollen tube. The human sperm cell is divided into a head that contains the nucleus, a mid-piece that contains mitochondria to provide energy for the sperm, & a flagellum that allows the sperm to move. When fertilization occurs, the nucleus & other contents from the sperm cells are drawn into the cytoplasm of the oocyte, but the mitochondria in the sperm are destroyed & do not survive in the zygote. Since mitochondria contain their own DNA (thought to be a relic from an existence as separate symbiotic organisms), all of the mitochrondrial DNA in humans is thus inherited from the female. The semen produced by the male reproductive tract act as a medium for sperm typically contains over 100 million sperm cells, all of which have but one purpose: to fertilize the single available oocyte.

1、精子总活力（PR+NP）：PR:前向运动精子，NP:非前向运动精子，精子总活力=PR+NP。

2、精子总活力是指精液中呈前进运动精子所占的百分率。由于只有具有前进运动的精子才可能具有正常的生存能力和受精能力，所以活力与雌性受胎率密切相关，从而它是目前评定精液品质优劣的常规检查的主要指标之一。

3、如检验报告单所示精子总活力（PR+NP）结果单位为8。0%，其参考范围为≥40%；前向运动精子（PR）结果单位为6.0%，其参考范围为≥32%，由此可见精子总活力较低。精子活力低又称为弱精症，是临床上最常见的导致男性不育的原因之一，生育能力正常有活力精子应在70%以上，若有活力精子低于50%则为异常，即精液参数中前向运动的精子(a和b级)小于50%或a级运动的精子小于25%的病症，若精子完全无活动力为死精子症。精子活力低下症也称弱精症。

如何增强精子活力：

（1）注重养生---注意对肾精的养护；

（2）调整起居---提供精子宜居环境；

（3）提倡卫生的性生活；

（4）慎用补品---误用导致病情加重；

（5）预防各种危害男性生育能力的传染病；

（6）避免过度手淫等。

前面的是精液 后面那个是精子

精子的英文sperm.