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spermatozoonenUK
sper·mat·o·zo·on S0629400 (spər-măt′ə-zō′ŏn′, -ən, spûr′mə-tə-)n. pl. sper·mat·o·zo·a (-zō′ə) The mature male gamete of an animal, usually consisting of a nucleate head, a short neck, and a thin motile tail.
sper·mat′o·zo′al (-zō′əl), sper·mat′o·zo′an (-zō′ən), sper·mat′o·zo′ic (-zō′ĭk) adj.spermatozoon (ˌspɜːmətəʊˈzəʊɒn) n, pl -zoa (-ˈzəʊə) (Physiology) any of the male reproductive cells released in the semen during ejaculation, consisting of a flattened egg-shaped head, a long neck, and a whiplike tail by which it moves to fertilize the female ovum. Also called: sperm or zoosperm ˌspermatoˈzoal, ˌspermatoˈzoan, ˌspermatoˈzoic adjsper•mat•o•zo•on (spɜrˌmæt əˈzoʊ ən, -ɒn)
n., pl. -zo•a (-ˈzoʊ ə) the mature male reproductive cell, actively motile in semen and serving to fertilize the ovum. [1830–40; < New Latin; see spermato-, -zoon] sper•mat`o•zo′al, sper•mat`o•zo′an, sper•mat`o•zo′ic, adj. sper·mat·o·zo·on (spər-măt′ə-zō′ŏn′) Plural spermatozoa The mature reproductive cell of male animals. It is produced by the testis and is capable of fertilizing a female reproductive cell. A single spermatozoon carries only half as many chromosomes as the other cells of the body.spermatozoon(pl. spermatozoa) The male gamete of animals.Thesaurus| Noun | 1. |  spermatozoon - the male reproductive cell; the male gamete; "a sperm is mostly a nucleus surrounded by little other cellular material"sperm, sperm cell, spermatozoanflagellum - a lash-like appendage used for locomotion (e.g., in sperm cells and some bacteria and protozoa)come, cum, ejaculate, semen, seminal fluid, seed - the thick white fluid containing spermatozoa that is ejaculated by the male genital tractgamete - a mature sexual reproductive cell having a single set of unpaired chromosomesacrosome - a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the eggmale reproductive system - the reproductive system of males |
TranslationsspermatozoonenUK
spermatozoon: see spermsperm
or spermatozoon
, in biology, the male gamete (sex cell), corresponding to the female ovum in organisms that reproduce sexually. In higher animals the sperm is produced in the testis of the male; it is much smaller than the ovum and consists primarily of a head,
..... Click the link for more information. .Spermatozoon the male sexual cell in animals. In all vertebrates and most invertebrates a flagellum, or tail, enables the spermatozoa to move forward. The spermatozoa of some worms, myriopods, crustaceans, mites, and ticks are tailless and are characterized by a wide variation in structure and by amoeboid movement. Spermatozoa range in length, according to species, from tens to hundreds of micrometers; the spermatozoa of insects may reach several millimeters in length. Spermatozoa with tails have a comparatively short head that may be spherical, conical, or hooked in shape. A nucleus containing condensed chromatin is found in the head. At the head’s anterior end there is an acrosome containing lysins. Below the head there is a thinner middle piece that ends in a threadlike tail. In most animal species the middle piece is short and encloses a basal granule (centriole) consisting of nine triplets of short microtubules arranged in a ring and surrounded by a halo of four to ten large mitochondria. Extending from the basal granule is an axial filament, or axo-neme, which by contracting enables the flagellum to beat and the spermatozoon to move. The ultrastructure of the axial filament is virtually the same in all spermatozoa and is similar to that of cilia. A filament consists of fibrils (microtubules 200–250 angstroms in diameter), two of which lie in the center surrounded by a ring of nine peripheral fibril doublets (9 + 2). Sometimes nine additional fibrils are found outside the doublets (9 + 9 + 2). Flagellate peripheral fibrils are transformed directly into microtubules of the basal granule, and the central fibrils remain free. Proteins similar to actin and myosin (found in skeletal muscles) and capable of splitting ATP are found in flagellate axial filaments in fibrils and in structures directly associated with fibrils. In insects the head of a spermatozoon is very elongated and sometimes spirally coiled, extending almost imperceptibly into a long tail. Much of the tail contains a distinctive structure of mitochondrial origin called a mitochondrial helix. In many animals several types of spermatozoa are formed in the testes. Most are atypical, resulting from spermatogenic disturbances primarily occurring during meiosis. These spermatozoa apparently cannot fertilize ova. REFERENCESWilson, E. Kletka i ee rol’ v razvitii i nasledstvennosti, vol. 1. Moscow-Leningrad, 1936. (Translated from English.)
Rukovodstvo po tsitologii, vol. 2. Moscow-Leningrad, 1966.
Hancock, J. L. “The Ultrastructure of Mammalian Spermatozoa.” In Advances in Reproductive Physiology. London, 1966.L. V. DANILOVA spermatozoon[spər‚mad·ə′zō·ən] (histology) A mature male germ cell. Also known as sperm. spermatozoon any of the male reproductive cells released in the semen during ejaculation, consisting of a flattened egg-shaped head, a long neck, and a whiplike tail by which it moves to fertilize the female ovum spermatozoonenUK
spermatozoon [sper″mah-to-zo´on] (pl. spermatozo´a) (Gr.) a mature male germ cell, the specific output of the testes, which fertilizes the mature ovum (secondary oocyte) in reproduction" >sexual reproduction. It is microscopic in size, looks like a translucent tadpole, and has a flat elliptical head containing a spherical center section, and a long tail by which it propels itself with a vigorous lashing movement. Spermatozoa are produced in the seminiferous tubules of the testes. The developmental stages of the germ cell are the spermatogonium, spermatocyte, spermatid, and finally spermatozoon. When mature, the spermatozoa are carried in the semen. At the climax of coitus, the semen is discharged into the vagina of the female. A single discharge (about a teaspoonful of semen on the average) may contain more than 250 million spermatozoa. Only a few of these will travel as far as the fallopian tubes; if an ovum is present there, and if the head of a single sperm penetrates the ovum, fertilization takes place. adj., adj spermatozo´al. Human spermatozoon: side view (in cross-section) and flat view.sperm, pl. sperms (sperm), The male gamete or sex cell that contains the genetic information to be transmitted by the male, exhibits autokinesia, and is able to effect zygosis with an oocyte. The human sperm is composed of a head and a tail, the tail being divisible into a neck, a middle piece, a principal piece, and an end piece; the head, 4-6 mcm in length, is a broadly oval, flattened body containing the nucleus; the tail is about 55 mcm in length. Synonym(s): sperm cell, spermatozoon [G. sperma, seed] spermatozoon (spər-măt′ə-zō′ŏn′, -ən, spûr′mə-tə-)n. pl. spermato·zoa (-zō′ə) The mature male gamete of an animal, usually consisting of a nucleate head, a short neck, and a thin motile tail.
sper·mat′o·zo′al (-zō′əl), sper·mat′o·zo′an (-zō′ən)(-zō′ĭk), sper·mat′o·zo′ic (-zō′ĭk) adj.sperm (spĕrm) The male gamete or sex cell that contains the genetic information to be transmitted by the male, exhibits autokinesia, and is able to effect zygosis with an oocyte. The human sperm is composed of a head and a tail, the tail being divisible into a neck, a middle piece, a principal piece, and an end piece; the head, 4-6 mcm in length, is a broadly oval, flattened body containing the nucleus; the tail is about 55 mcm in length. [G. sperma, seed] SPERMATOZOON: Mature sperm cellspermatozoonS13-878200 (sper?mat-o-zo'on) plural.spermatozoa [? + zoon, life] The mature male sex or germ cell formed within the seminiferous tubules of the testes. The spermatozoon has a broad oval flattened head with a nucleus and a protoplasmic neck or middle piece and tail. It is about 51µm long and resembles a tadpole. It has the power of self-propulsion by means of a flagellum. It develops after puberty from the spermatids in the testes in enormous quantities. The head pierces the envelope of the ovum and loses its tail when the two cells fuse. This process is called fertilization. See: illustration; sperm for illus.; fertilizationPatient discussion about spermatozoonQ. how do i teat my no sperm count? i do not have a live sperm,how can i treat and have live sperm countA. The treatment is done only at specialist centers, and consists first of evaluation of the reason for this condition (called azoospermia). If an anatomical malformation is found, it may be corrected, as well as medical conditions, and in some cases, direct extraction of sperms from the testes (called MESA) enables in-vitro fertilization.
You may read more here:
www.nlm.nih.gov/medlineplus/infertility.html
Q. What are some ways to get an erection? Libido and sperm are OK. I have had a problem with depression for years. I have always had a strong libido and I find that my ED has been a factor in my depression. Sexual relationships have helped me deal with my depression. What a MIRACLE! How can something so good be a remedy for mental problems. Oh! for a good stiff dick. I have considered a penile prosthesis implant but I'm still hoping for something better. Any information that might help would be greatly appreciated and I will remember you in my dreams and fantasies(sexual)for you ladies and I'll thank you studs. JohnA. I am a female but my husband likes to think about a womans vagina. So maybe you should get a fake vagina try Adameve.com. And also try lubricants and other things, think about what turns you on.
Q. can hepatitis be transferred from fathers sperm when concieving a child? My partner has hepatitis C and he has gotten me pregnant will our baby have it too?A. Here is taken from wikipedia (http://en.wikipedia.org/wiki/Hepatitis_C#Transmission) :
Sexual transmission of HCV is considered to be rare. Studies show the risk of sexual transmission in heterosexual, monogamous relationships is extremely rare or even null. The CDC does not recommend the use of condoms between long-term monogamous discordant couples (where one partner is positive and the other is negative). However, because of the high prevalence of hepatitis C, this small risk may translate into a non-trivial number of cases transmitted by sexual routes. Vaginal penetrative sex is believed to have a lower risk of transmission than sexual practices that involve higher levels of trauma to anogenital mucosa.
Mother-to-child transmission of hepatitis C has been well described, but occurs relatively infrequently. Transmission occurs only among women who are HCV RNA positive at the time of delivery; the risk of transmission in this setting is approximately 6 out of 100. Among women w More discussions about spermatozoonspermatozoonenUK
Related to spermatozoon: spermatozoaSynonyms for spermatozoonnoun the male reproductive cellSynonyms- sperm
- sperm cell
- spermatozoan
Related Words- flagellum
- come
- cum
- ejaculate
- semen
- seminal fluid
- seed
- gamete
- acrosome
- male reproductive system
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