- tail of spermatozoon
- the flagellum of a spermatozoon, which contains the axoneme; it has four regions: the neck, middle piece, principal piece, and end piece.
Medical dictionary. 2011.
tail of spermatozoon
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spermatozoon — [spʉr΄mə təzō′än΄, spər mat΄əzō′än΄, spʉr΄mətə zō′ən, spər mat΄ə zōən] n. pl. spermatozoa [spʉr′mə təzō′ə, spər mat΄əzō′ə] [ModL < SPERMATO + Gr zōion, animal: see BIO ] the male germ cell, found in semen, which penetrates the ovum, or egg, of … English World dictionary
Spermatozoon — Infobox Anatomy Name = Spermatozoon Latin = |spermiusmatro GraySubject = 258 GrayPage = 1243 Caption = A sperm cell attempts to penetrate an ovum coat to fertilize it. Width = 350 Caption2 = Diagram of a human spermatozoon System = MeshName =… … Wikipedia
spermatozoon — 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 ovum. The human s. is composed of a head and a tail, the tail being divisible into a … Medical dictionary
spermatozoon — Spermatozoid Sper ma*to*zo id, n. [Spermatozo[ o]n + Gr. e i^dos form.] (Biol.) The male germ cell in animals and plants, the essential element in fertilization; a microscopic animalcule like particle, usually provided with one or more cilia by… … The Collaborative International Dictionary of English
spermatozoon — sperm; n.; pl. spermatozoa a mature male sex cell (see gamete). The tail of a sperm enables it to swim, which is important as a means for reaching and fertilizing the ovum (although muscular movements of the uterus may assist its journey from the … The new mediacal dictionary
neck of spermatozoon — a short portion of the tail of a spermatozoon, just posterior to the head, anterior to the middle piece. Called also connecting piece. See illustration at spermatozoon … Medical dictionary
fibrous sheath of spermatozoon — the fibrous sheath surrounding the principal piece of the tail of a spermatozoon … Medical dictionary
heredity — /heuh red i tee/, n., pl. heredities. Biol. 1. the transmission of genetic characters from parents to offspring: it is dependent upon the segregation and recombination of genes during meiosis and fertilization and results in the genesis of a new… … Universalium
fertilization — fertilizational, adj. /ferr tl euh zay sheuhn/, n. 1. an act, process, or instance of fertilizing. 2. the state of being fertilized. 3. Biol. a. the union of male and female gametic nuclei. b. fecundation or impregnation of animals or plants. 4.… … Universalium
sperm — sperm1 /sperrm/, n., pl. sperm, sperms for 2. 1. semen. 2. a male reproductive cell; spermatozoon. [1350 1400; ME sperme < LL sperma < Gk spérma seed, equiv. to sper (base of speírein to sow seeds) + ma n. suffix of result] sperm2 /sperrm/, n … Universalium
