epithelium

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ep·i·the·li·um

 (ĕp′ə-thē′lē-əm)
n. pl. ep·i·the·li·a (-lē-ə) or ep·i·the·li·ums
Membranous tissue composed of one or more layers of cells separated by very little intercellular substance and forming the covering of most internal and external surfaces of the body and its organs.

[New Latin epithēlium : epi- + Greek thēlē, nipple; see dhē(i)- in Indo-European roots.]

ep′i·the′li·al adj.

epithelium

(ˌɛpɪˈθiːlɪəm)
n, pl -liums or -lia (-lɪə)
(Anatomy) an animal tissue consisting of one or more layers of closely packed cells covering the external and internal surfaces of the body. The cells vary in structure according to their function, which may be protective, secretory, or absorptive
[C18: New Latin, from epi- + Greek thēlē nipple]
ˌepiˈthelial adj

ep•i•the•li•um

(ˌɛp əˈθi li əm)

n., pl. -li•ums, -li•a (-li ə)
any tissue layer covering body surfaces or lining the internal surfaces of body cavities, tubes, and hollow organs.
[1740–50; < New Latin < Greek epi- epi- + thēl(ḗ) teat + New Latin -ium -ium2]

ep·i·the·li·um

(ĕp′ə-thē′lē-əm)
The thin, protective layer of cells that covers most of the outer surface of an animal body and lines the inner surface of many body parts. In vertebrate animals, the outer layer of the skin, called the epidermis, is composed of epithelium.

epithelium

1. A type of animal tissue that covers inner and outer surfaces.
2. The layer of cells covering the body’s surface and lining the alimentary canal and respiratory and urinary tracts.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.epithelium - membranous tissue covering internal organs and other internal surfaces of the bodyepithelium - membranous tissue covering internal organs and other internal surfaces of the body
endothelium - an epithelium of mesoblastic origin; a thin layer of flattened cells that lines the inside of some body cavities
mesothelium - epithelium originating in the embryonic mesoderm; lines the primordial body cavity
neuroepithelium - epithelium associated with special sense organs and containing sensory nerve endings
epithelial cell - one of the closely packed cells forming the epithelium
animal tissue - the tissue in the bodies of animals
decidua - the epithelial tissue of the endometrium
Translations
epitelvýstelka

epithelium

[ˌɛpɪˈθiːlɪəm] nepitelio

ep·i·the·li·um

n. L. epitelio, tejido que cubre las superficies expuestas e interiores del cuerpo;
ciliated ______ ciliado;
columnar ______ columnar;
cuboidal ______ cuboidal;
squamous ______ escamoso;
stratified ______ estratificado;
transitional ______ de transición, transicional.
References in periodicals archive ?
Although the lining of tailgut cysts can include different epithelium types, including columnar, transitional, or squamous tissues, glandular or transitional epithelium differentiate tailgut cysts from epidermoid and dermoid cysts.
The latter, enterogenous cysts, are lined by columnar cuboidal or transitional epithelium. Most often, they are multilocular, and their thin walls are surrounded by smooth muscle fibers.
Histopathologic examination of the polyp under a microscope revealed edema covered by fibrovascular stromal tissue and a fibroepithelial structure composed of normal transitional epithelium with distinctive vascularization (Figure 2d).
In (A), the change in the atrophic epithelium is particularly apparent in the hymenal carunculae, color, and elasticity; the urethra is obvious because of the everted meatus, revealing transitional epithelium (rather that squamous epithelium), "tunneling," and exteriorization; and morphology is represented by contraction and loss of considerable concavity, labial resorption and circular dimension.
The innermost lining of a urachal remnant is comprised of transitional epithelium. Chronic inflammation can lead to metaplasia, principally adenocarcinoma [5, 7].
Caption: Figure 1: Vascular tissue with transitional epithelium.
The microscopy of the soft pale projections of the right ovary had papillary structures with fibrovascular cores which were lined by transitional epithelium exhibiting nuclear pleomorphism, hyperchromatism, and increased mitotic activity (Figure 3).
On histologic examination, a cystic structure lined by a transitional epithelium was reported (Figure 3).
Other differential diagnoses for the present case are neoplasms that cause transcoelomic metastasis such as mesotheliomas and carcinomas arising from the ovaries, transitional epithelium, biliary ducts and gastric mucosa (MEUTEN, 2002).
Histopathology confirmed a benign cyst with transitional epithelium. The patient had resolution of her symptoms.

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