| 释义 |
seminal vesicle
seminal vesiclen. Either of a pair of pouchlike glands situated on each side of the male urinary bladder that secrete seminal fluid and nourish and promote the movement of spermatozoa through the urethra.seminal vesicle n (Anatomy) either of a pair of tubular glands that contribute fluids which make up semen in some mammals including human males: each seminal vesicle is connected to a vas deferens sem′inal ves′icle
n. either of two small saclike glands, located on each side of the bladder in males, that add nutrient fluid to semen during ejaculation. [1885–90] Thesaurus| Noun | 1. | seminal vesicle - either of a pair of glands located on either side of the male urinary bladder that open into the vas deferens and that secrete many components of semen during ejaculationduct gland, exocrine, exocrine gland - a gland that secretes externally through a ductmale reproductive system - the reproductive system of males |
TranslationsSeminal Vesicle
seminal vesicle[′sem·ən·əl ′ves·i·kəl] (anatomy) A saclike, glandular diverticulum on each ductus deferens in male vertebrates; it is united with the excretory duct and serves for temporary storage of semen. Seminal Vesicle in male salientians and birds and in some male fish and mammals (including man), a glandular widening or protrusion of the terminal portion of the seminal duct that releases an alkaline mucosal secretion needed to nourish and mobilize spermatozoa. In most animals the secretion of the seminal vesicles is a component of semen that serves to liquefy sperm and, in some animals, promotes the formation of sper-matophores from sperm. Seminal vesicles are paired or unpaired. They are formed during embryonic development from various portions of the deferent ducts and may be simple widenings or sacculated processes of the ducts. In some animals seminal vesicles are independent structures united to the deferent ducts only by a narrow canal. Seminal vesicles are especially developed in some rodents and insectivores; they are absent in monotremes, marsupials and many predatory animals. In man, the seminal vesicles form a paired organ 4–5 cm long, 2 cm wide, and 1.0–1.5 cm thick. They are located in connective tissue between the posteroinferior surface of the urinary bladder and the rectum, adjacent to the base of the prostate. The vesicles are convoluted tubes with numerous recesses. The vesicular wall consists of an external connective-tissue membrane, a weakly developed muscular membrane, a submucosal layer, and a mucous membrane with columnar or cubical epithelium. The excretory duct of the seminal vesicles is connected to the terminal portion of the seminal canal, forming the ejaculatory duct. seminal vesicle
vesicle [ves´ĭ-k'l] 1. a small bladder or sac containing liquid.2. a small circumscribed elevation of the epidermis containing a serous fluid; a small blister.allantoic vesicle the internal hollow portion of the allantois.auditory vesicle a detached ovoid sac formed by closure of the auditory pit in the early embryo, from which the percipient parts of the inner ear develop.brain v's the five divisions of the closed neural tube in the developing embryo, including the telencephalon, diencephalon, mesencephalon, metencephalon, and myelencephalon.brain v's, primary the three earlier subdivisions of the embryonic neural tube, including the forebrain, midbrain, and hindbrain.brain v's, secondary the four brain vesicles formed by specialization of the forebrain and of the hindbrain in later embryonic development.chorionic vesicle the chorion of a mammal.encephalic v's brain vesicles.germinal vesicle the fluid-filled nucleus of an oocyte toward the end of prophase of its meiotic division.lens vesicle a vesicle formed from the lens pit of the embryo, developing into the crystalline lens.olfactory vesicle 1. the vesicle in the embryo that later develops into the olfactory bulb and tract.2. a bulbous expansion at the distal end of an olfactory cell, from which the olfactory hairs project.optic vesicle an evagination on either side of the forebrain of the early embryo, from which the percipient parts of the eye develop.otic vesicle auditory vesicle.seminal vesicle paired sacculated pouches attached to the posterior urinary bladder; the duct of each joins the ipsilateral ductus deferens to form the ejaculatory duct.umbilical vesicle the pear-shaped expansion of the yolk sac growing out into the cavity of the chorion, joined to the midgut by the yolk stalk.sem·i·nal gland [TA] one of two folded, sacculated, glandular structures that is a diverticulum of the ductus deferens; its secretion is one of the components of semen; it normally does not store spermatozoa as was previously thought. Synonym(s): glandula vesiculosa [TA], glandula seminalis ☆ , seminal vesicle ☆ , vesicula seminalis ☆ , gonecyst, gonecystis, seminal capsuleseminal vesiclen. Either of a pair of pouchlike glands situated on each side of the male urinary bladder that secrete seminal fluid and nourish and promote the movement of spermatozoa through the urethra.sem·i·nal ves·i·cle (sem'i-năl ves'i-kĕl) One of two folded, sacculated, glandular diverticula of the ductus deferens; its secretion is one of the components of semen.
Synonym(s): gonecyst, gonecystis, seminal gland. seminal vesicle or vesicula seminalis an organ present in male animals that often stores sperm and adds extra secretions to the semen.seminal vesicle
Related to seminal vesicle: bulbourethral gland, seminal vesicle cystWords related to seminal vesiclenoun either of a pair of glands located on either side of the male urinary bladder that open into the vas deferens and that secrete many components of semen during ejaculationRelated Words- duct gland
- exocrine
- exocrine gland
- male reproductive system
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