tissue (redirected from tissue death)

tissue /tis·sue/ (tish´u) an aggregation of similarly specialized cells which together perform certain special functions.

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adenoid tissue  lymphoid t.

adipose tissue  connective tissue made of fat cells in meshwork of areolar tissue.

areolar tissue  connective tissue made up largely of interlacing fibers.

bony tissue  bone.

brown adipose tissue  a thermogenic type of adipose tissue containing a dark pigment, and arising during embryonic life in certain specific areas in many mammals, including humans; it is prominent in the newborn.

cancellous tissue  the spongy tissue of bone.

cartilaginous tissue  the substance of cartilage.

chromaffin tissue  a tissue composed largely of chromaffin cells, well supplied with nerves and vessels; it occurs in the adrenal medulla and also forms the paraganglia of the body.

cicatricial tissue  the dense fibrous tissue forming a cicatrix, derived directly from granulation tissue.

connective tissue  the stromatous or nonparenchymatous tissues of the body; that which binds together and is the ground substance of the various parts and organs of the body.

elastic tissue , elastic tissue, yellow connective tissue made up of yellow elastic fibers, frequently massed into sheets.

endothelial tissue  endothelium.

epithelial tissue  epithelium.

erectile tissue  spongy tissue that expands and becomes hard when filled with blood.

extracellular tissue  the total of tissues and body fluids outside the cells.

fatty tissue  adipose t.

fibrous tissue  the common connective tissue of the body, composed of yellow or white parallel fibers.

gelatinous tissue  mucous t.

glandular tissue  an aggregation of epithelial cells that elaborate secretions.

granulation tissue  the newly formed vascular tissue normally produced in healing of wounds of soft tissue, ultimately forming the cicatrix.

gut-associated lymphoid tissue  (GALT) lymphoid tissue associated with the gut, including the tonsils, Peyer's patches, lamina propria of the gastrointestinal tract, and appendix.

indifferent tissue  undifferentiated embryonic tissue.

interstitial tissue  connective tissue between the cellular elements of a structure.

lymphadenoid tissue  tissue resembling that of lymph nodes, found in the spleen, bone marrow, tonsils, and other organs.

lymphoid tissue  a latticework of reticular tissue, the interspaces of which contain lymphocytes.

mesenchymal tissue  mesenchyme.

mucous tissue  a jellylike connective tissue, as occurs in the umbilical cord.

muscle tissue , muscular tissue the substance of muscle, consisting of muscle fibers, muscle cells, connective tissue, and extracellular material.

myeloid tissue  red bone marrow.

nerve tissue , nervous tissue the specialized tissue making up the central and peripheral nervous systems, consisting of neurons with their processes, other specialized or supporting cells, and extracellular material.

osseous tissue  the specialized tissue forming the bones.

reticular tissue , reticulated tissue connective tissue consisting of reticular cells and fibers.

scar tissue  cicatricial t.

sclerous tissues  the cartilaginous, fibrous, and osseous tissue.

skeletal tissue  the bony, ligamentous, fibrous, and cartilaginous tissue forming the skeleton and its attachments.

subcutaneous tissue  the layer of loose connective tissue directly under the skin.

white adipose tissue , yellow adipose tissue the adipose tissue comprising the bulk of the body fat.

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tis·sue (tsh)

n.

An aggregation of morphologically similar cells and associated intercellular matter acting together to perform specific functions in the body. There are four basic types of tissue: muscle, nerve, epithelial, and connective.

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tissue (tish´oo),

n an aggregation of similarly specialized cells united in the performance of a particular function.

tissue adhesives,

n agents or materials that may be used to seal two cut tissue surfaces together or cover a surgically exposed surface such as butyl cyanoacrylate, which is used to cover palatal donor sites in periodontal surgery.

tissue, compression of,

n See tissue displaceability.

tissue conditioning,

n a disciplined program of patient-performed plaque control measures designed for gingiva that is soft, spongy, and bleeds easily from poor oral hygiene habits, in order to improve gingival health before subgingival scaling is performed.

tissue, connective,

n the binding and supportive tissue of the body; derived from the mesoderm; depending on its location and function, it is composed of fibroblasts, primitive mesenchymal cells, collagen fibers, and elastic fibers, with associated blood and lymphatic vessels and nerve fibers.

tissue, critical,

n tissue that reacts most unfavorably to radiation or by its nature attracts and absorbs specific radiochemicals.

tissue displaceability,

n the quality of oral tissues that permits them to be placed in or assume other positions than their relaxed position.

tissue displacement,

n change in the form or position of tissues as a result of pressure.

tissue, engineering,

n the interdisciplinary field that uses life science and engineering principles in the development of biologic substitutes for tissue restoration or replacement.

tissue, flabby,

n See tissue, hyperplastic.

tissue, hyperplastic,

n in dentistry, excessively movable tissue about the mandible or maxillae resulting from increases in the number of normal cells.

tissue, interdental,

n the gingivae, cementum of the teeth, free gingival and transseptal fibers of the periodontal membrane (ligament), and alveolar and supporting bone.

tissue molding,

n See border molding.

tissue, peripheral,

n See border structures.

tissue, redundant,

n See epulis fissuratum.

tissue sloughing,

n a surface layer of flesh peeling away. Possible causes are extensive exposure to topical anesthetic, overly abrasive toothpaste, smokeless tobacco, tissue burn, or mouthrinses. Also called
epithelial desquamation.

tissue, subjacent,

n the structures that underlie or are in border contact with a denture base; they may or may not have a supporting relationship to the overlying base.

tissue-borne partial denture,

n See denture, partial, tissue-borne.

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tissue

a group or layer of similarly specialized cells that together perform certain special functions. For anatomically specific tissues see under their identifying titles, e.g. adipose, connective.

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tissue death

see necrosis.

tissue density

the penetrability of tissue by x-rays, bone and tooth being most dense, blood and soft tissue the next, fat the next, and gas and air least.

tissue edema

an abnormal accumulation of tissue fluid.

tissue factor

see tissue thromboplastin.

tissue fluid

the extracellular fluid that constitutes the environment of the body cells. It is low in protein, is formed by filtration through the capillaries, and the excess drains away as lymph. See also interstitial fluid.

tissue inhibitors

inhibitors of fibrinolysis; present in placenta.

indifferent tissue

undifferentiated embryonic tissue.

tissue necrosis fever

fever caused by pyrogens released by necrotic pyrogens.

tissue plasminogen activator

see plasminogen activator.

tissue reacting agent

substances that have a poorly defined but advantageous local effect on tissues.

tissue receptor site

a cell receptor common to cells of a particular tissue.

tissue residue

residues of chemical substances that are unacceptable to local pure food legislation especially sulfonamides, estrogens, chlorinated hydrocarbons, heavy metals. These are thought or known to have a deleterious effect on people eating or drinking the relevant animal product. See also chemical food residue.

tissue sensitivity

the susceptibility of individual tissues to injury by x-ray. The injury may be by way of inflammation, necrosis or cessation of cell growth. Fast-growing tissues in which the cells have a high mitotic index are the most sensitive, especially gonads, germinative layer of skin and erythropoietic tissues.

supportive t's

cartilage and bone.

tissue therapy

see glandular therapy.

tissue typing

identification of tissue types for purposes of predicting acceptance or rejection of grafts and organ transplants. The process and purposes of tissue typing are essentially the same as for blood typing. The major difference lies in the kinds of antigens being evaluated. White blood cells, particularly lymphocytes, are used for tissue typing. The acceptance of allografts depends particularly on the matching of MHC antigens. If the donor and recipient are not MHC identical, the allograft is rejected. See also typing.