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  • Fertility
  • While we often think of sperm count as an indication of a man's virility, it really only measures male fertility - revealing how likely a guy is to impregnate his partner during unprotected sex, not the state of his sex drive. (askmen.com)
  • infertility
  • Unfamiliar with the process, I immediately thought that most of these couples were struggling with infertility issues and that the reason so many military families bank sperm is so that the woman could continue treatments even if her partner were deployed . (military.com)
  • bank sperm
  • As the UK article points out, couples choose to bank sperm for many reasons. (military.com)
  • Because there are few stories available doesn't mean that military couples aren't still choosing to bank sperm, but it did pique my curiosity. (military.com)
  • semen
  • The fluid medium into which sperm are released is called semen. (news-medical.net)
  • Studies have shown that the proportion of sperm in the cervical mucus and uterine fluid that have a healthy morphology is significantly greater than in the original semen. (news-medical.net)
  • Sperm is released from the male in a fluid called semen. (news-medical.net)
  • Semen is alkaline and does not allow the sperm to be completely motile until they reach the female reproductive tract or the vagina which is acidic in pH. (news-medical.net)
  • Doctors usually assess sperm morphology during a general semen analysis or fertility test. (medicalnewstoday.com)
  • Sperm morphology tests examine semen samples under a microscope and calculate the percentage of sperm with a normal form (NF) in the total sample. (medicalnewstoday.com)
  • Lab technicians usually process sperm morphology tests by putting a small portion of the semen on a glass slide, letting it air dry, and then staining it with a dye that makes individual sperm easier to see under the microscope. (medicalnewstoday.com)
  • One round of testing is not enough to fully assess semen or sperm quality. (medicalnewstoday.com)
  • Sperm cells are carried out of the male body in a fluid known as semen. (wikipedia.org)
  • Sperm most commonly refers to: Sperm (cell), the male gamete involved in heterogamous sexual reproduction Spermatozoon (zoosperm), a sperm cell propelled by a single flagellum, found in most animals Semen ("sperma"), the bodily fluid containing spermatozoa Sperm may also refer to: Sperm (album), the second studio album by the German band Oomph! (wikipedia.org)
  • Based on studies with a fiber optic endoscope attached to a man's penis during sex, Baker describes how the cervix behaves during sex and orgasm, dipping down "like an elephant's trunk" into the pool of semen so that the sperm can more easily swim into it, the so-called "upsuck theory" of female orgasm. (wikipedia.org)
  • Density gradient centrifugation (in a continuous or discontinuous gradient) can concentrate semen samples with low concentration of sperm, using the density of sperm as a measure of their quality. (wikipedia.org)
  • abnormal
  • It can be used in teratozoospermia , because once the egg is fertilized, abnormal sperm morphology does not appear to influence blastocyst development or blastocyst morphology. (wikipedia.org)
  • Another important feature of the cervical mucus is its ability to restrict the progress of sperm with abnormal morphology. (news-medical.net)
  • Together, these findings suggest that the entry of morphologically abnormal sperm into the cervical mucus is limited by their decreased movement as a result of increased mucosal resistance. (news-medical.net)
  • Speaking at a press conference at the European Society of Human Reproduction and Embryology (ESHRE), lead researcher Professor Nares Sukcharoen commented: "The conclusion of the study is that the vasectomy seemed to be the cause of the abnormal sperm," adding that men undergoing a vasectomy operation should consider freezing their sperm before hand, in case they wished to start a family again in the future. (netdoctor.co.uk)
  • On its own, an abnormal or low sperm morphology score is typically not an indication of infertility . (medicalnewstoday.com)
  • ejaculation
  • During ejaculation, the sperm are deposited in the posterior vagina, where they quickly make contact with the cervical mucus, thereby avoiding vaginal acid and immune attack. (news-medical.net)
  • Each extra sperm in their ejaculation is another ticket in the big raffle of Life . (everything2.com)
  • In addition to ejaculation, it is possible to extract sperm through TESE. (wikipedia.org)
  • flagellum
  • A fundamental change that occurs during capacitation is alkalinization of sperm cytoplasm, in which the intracellular pH levels increase, particularly in the flagellum. (britannica.com)
  • To access the egg, the sperm uses chemicals and a spike present in the sperm's head to bore a hole into the egg's surface while it is propelled by the thrashing flagellum. (news-medical.net)
  • The flagellum of the sperm provides a whip-like movement in order to propel it forwards. (news-medical.net)
  • The sperm consists of a head that is 5 µm by 3 µm in size and a flagellum of around 50 µm in length. (news-medical.net)
  • male
  • Written by leading, internationally renowned clinicians and basic scientists with expertise in sperm DNA, Sperm Chromatin: Biological and Clinical Applications in Male Infertility and Assisted Reproduction provides readers with a thoughtful and comprehensive review of the biological and clinical significance of sperm DNA damage. (springer.com)
  • Unlike any other title on the topic, Sperm Chromatin: Biological and Clinical Applications in Male Infertility and Assisted Reproduction is an invaluable addition to the literature and will serve as an indispensable resource for basic scientists with an interest in sperm biology and for urologists, gynecologists, reproductive endocrinologists, and embryologists working in the field of infertility. (springer.com)
  • Another male can remove previously stored sperm to better chances of successful mating. (wikipedia.org)
  • A sperm is the male reproductive cell. (news-medical.net)
  • In a human male, having up to half of the sperm non-motile is considered normal. (everything2.com)
  • In fruit flies , the male employs a toxic sperm that may discourage the female from subsequent matings. (everything2.com)
  • And on a more positive note, mice sperm (from a single male) cooperate using formation flying to speed their approach to destiny . (everything2.com)
  • In the types of sexual reproduction known as anisogamy and its subtype oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. (wikipedia.org)
  • Offensive tactics of sperm competition involve direct interference by one male on the reproductive success of another male, for instance by physically removing another male's sperm prior to mating with a female. (wikipedia.org)
  • a male has a better chance of winning (i.e. fathering offspring) the more tickets he has (i.e. the more sperm he inseminates a female with). (wikipedia.org)
  • Non-fertile sperm increase the fertilisation success of the male producing them when sperm competition occurs. (wikipedia.org)
  • Non-fertile sperm delay or prevent the female mating again, thus allowing the male producing the non-fertile sperm a greater share of the paternity of her offspring (because the male avoids Sperm competition). (wikipedia.org)
  • Male masturbation is said to discard old, dying sperm, so that an ejaculate contains younger sperm that will stay active inside the cervix longer, with more of a chance of being present during the window of ovulation. (wikipedia.org)
  • Sperm precedence can be temporal, favoring either the first or last male to breed the female. (wikipedia.org)
  • Female sperm can be either: A sperm that contains an X chromosome, produced in the usual way by a male, referring to the occurrence of such a sperm fertilizing an egg and giving birth to a female. (wikipedia.org)
  • man's
  • Which has been shown to actually reduce a man's sperm count and lead to infertility ? (go.com)
  • whose sperm
  • Prior to 2010, a United Kingdom sperm bank was able to onsell sperm provided that the national limit of ten families in the UK had not been achieved from the donor whose sperm was being exported. (wikipedia.org)
  • Conditions applied to the importation, including a provision that a donor whose sperm is imported from outside the UK should not be used to create more than ten families within the UK. (wikipedia.org)
  • genes
  • Since many environments require different traits for success, females are somehow able to match sperm (acquired from multiple mates) that have the best genes for whichever environment in which they will develop. (wikipedia.org)
  • Because it is the only cell in the human body designed to leave the confines of the body, sperm genes echo those of unicellular life forms. (asbmb.org)
  • fertile
  • In silkworms, there is good evidence that fertile sperm are unable to fertilise if the non-fertile sperm are not present. (wikipedia.org)
  • The researchers artificially inseminated fertile sperm, non-fertile sperm or a mixture of both. (wikipedia.org)
  • Females that were receptive to a second mating had fewer of the non-fertile sperm type in storage than did non-receptive females. (wikipedia.org)
  • Non-fertile sperm delay female remating. (wikipedia.org)
  • A similarly low proportion of fertile sperm is found in the ejaculates of mice. (wikipedia.org)