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blastodermic vesicle
blastodermic vesiclen. See blastocyst.EncyclopediaSeeBlastocystblastodermic vesicle
blas·to·cyst (blas'tō-sist), The modified blastula stage of mammalian embryos, consisting of the embryoblast or inner cell mass and a thin trophoblast layer enclosing the blastocystic cavity or blastocele. Synonym(s): blastodermic vesicle [blasto- + G. kystis, bladder] blastodermic vesiclen. See blastocyst.blas·to·cyst (blas'tō-sist) The modified blastula stage of mammalian embryos (including human), consisting of the embryoblast (inner cell mass) and a thin trophoblast layer enclosing the blastocystic cavity.
Synonym(s): blastodermic vesicle. [blasto- + G. kystis, bladder]vesicle (ves'i-kel) [L. vesicula, a little bladder] A small blister-like elevation on the skin containing serous fluid. Vesicles may vary in diameter from a few millimeters to a centimeter. They may be round, transparent, opaque, or dark elevations of the skin, sometimes containing seropurulent or bloody fluid. In sudamina, they result from sweat that cannot escape from the skin; in herpes, they are mounted on an inflammatory base, having no tendency to rupture but associated with burning pain. In herpes zoster, they follow dermatomes. In dermatitis venenata, they result from contact with poison ivy or oak and are accompanied by great itching. They are also seen in dermatitis herpetiformis or multiformis. In impetigo contagiosa, they occur, esp. in children, in discrete form, flat and umbilicated, filled with straw-colored fluid, with no tendency to break. They dry up, forming yellow crusts with little itching. They are also seen in vesicular eczema, molluscum contagiosum, miliaria (prickly heat or heat rash), chickenpox, smallpox, and scabies. See: herpes; miliariaallantoic vesicleThe hollow, enlarged part of the allantois, esp. in birds and reptiles.auditory vesicleThat portion of the cerebral vesicle from which the exterior ear is formed. Synonym: otic vesicleblastodermic vesicleBlastocyst.brain vesicleOne of the five embryonic subdivisions of the brain.cerebral vesicleBrain vesicle.chorionic vesicleThe outer villus-covered layer of the early embryo. It encloses the embryo, amnion, umbilical cord, and yolk stalk. compound vesicleMultilocular vesicle.encephalic vesicleBrain vesicle.germinal vesiclePurkinje vesicle. See: Purkinje, Johannes E. vonlens vesicleThe embryonic vesicle formed from the lens pit. It develops into the lens of the eye. multilocular vesicleA vesicle that contains multiple chambers.optic vesicleA hollow outgrowth from the lateral aspects of the embryonic brain. The retinae and optic nerves develop from these paired vesicles. otic vesicleAuditory vesicle.primary brain vesicleOne of the three earliest subdivisions of the embryonic neural tube.seminal vesicleOne of two saccular glands below the urinary bladder in males. The duct from each joins the vas deferens on its own side to form the ejaculatory duct. The seminal vesicle produces an alkaline, fructose-rich secretion that enhances sperm motility and nourishes the sperm. synaptic vesicleA membranous sac located within the presynaptic membrane of an axon terminal and containing a neurotransmitter.transfer vesicleAn intracellular vesicle that carries proteins from one organelle to another; e.g., from the endoplasmic reticulum to the Golgi apparatus.umbilical vesicleThe portion of the embryonic yolk sac outside the body cavity.ThesaurusSeeblastocyst |