In dermatology, vesicles are small blisters, most often on the skin. Vesicles also can crop up on the mucous membranes, such as the buccal mucosa (the lining of the mouth). In anatomy, a vesicle is any small pouch. The word vesicle comes from the Latin diminutive vesiculum meaning a small bag or bladder.

Medical dictionary. 2011.

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  • vesicles — ves·i·cle || vesɪkl n. bladder or bladder like cavity; small blister filled with fluid; sac in the body, cyst (especially one filled with fluid); cavity formed in a rock by a pocket of gas that is trapped during the rock s formation (Geology) …   English contemporary dictionary

  • Optic vesicles — Infobox Embryology Name = PAGENAME Latin = v. ophthalmica GraySubject = 224 GrayPage = 1001 Caption = Transverse section of head of chick embryo of forty eight hours’ incubation. (Optic vesicle labeled at lower right.) Caption2 = Human embryo… …   Wikipedia

  • agranular vesicles — Synaptic vesicles that do not have a granular appearance in EM; 40 50nm in diameter, with membrane only 4 5nm thick. Characteristic of peripheral cholinergic synapses; (see also neurotransmitter). Some are located very close to presynaptic… …   Dictionary of molecular biology

  • Seminal vesicles — Two structures about five centimeters long that are located behind the bladder and above the prostate gland. The seminal vesicles contribute fluid to the ejaculate …   Medical dictionary

  • brain vesicles secondary — the five brain vesicles formed by specialization of the prosencephalon (telencephalon and diencephalon), mesencephalon, and rhombencephalon (metencephalon and myelencephalon) in later embryonic development …   Medical dictionary

  • cephalic vesicles — cerebral vesicles brain v s …   Medical dictionary

  • metanephric vesicles — comma and S shaped vesicles that arise from the mesenchyme of the metanephros and develop into metanephric nephrons …   Medical dictionary

  • synaptic vesicles — small membrane bound structures behind a presynaptic membrane, containing neurotransmitters; when depolarization occurs they fuse with the presynaptic membrane and release the neurotransmitter into the synaptic cleft. Diagram of synaptic vesicles …   Medical dictionary

  • coated vesicles — coated vesicles, Organellen des Membranrecycling, die bei der rezeptorvermittelten ⇒ Endocytose extrazelluläres Material in die Zelle transportieren, in der Zelle synthetisiertes Material transportieren und z.B. an Golgi und ER Membranen… …   Deutsch wörterbuch der biologie

  • cerebral vesicles — cerebral vesicles, the three primitive, hollow dilations into which the embryonic brain of vertebrates is divided …   Useful english dictionary

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