| basal corpuscle | <cell biology> Structure found at the base of eukaryotic cilia and flagella consisting of a continuation of the nine outer sets of axonemal microtubules but with the addition of a C tubule to form a triplet (like the centriole). May be self replicating and serves as a nucleating centre for axonemal assembly. Anchored in the cytoplasm by rootlets. Synonymous with kinetosome. (18 Nov 1997) |
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| Bizzozero's corpuscle | <haematology> A discoid cell (3m diameter) found in large numbers in blood, important for blood coagulation and for haemostasis by repairing breaches (small breaks) in the walls of blood vessels. Platelet _ granules contain lysosomal enzymes, dense granules contain ADP (a potent platelet aggregating factor) and serotonin (a vasoactive amine). They also release platelet-derived growth factor which presumably contributes to later repair processes by stimulating fibroblast proliferation. Synonym: thrombocytes. (09 Oct 1997) |
| blood corpuscle | <haematology> There are three main types of cell in the blood stream. The red cell, which carries oxygen, the white cell, which fights infections and the platelet, which helps prevent bleeding. The correct balance between each cell type must be maintained for the body to remain healthy. (13 Nov 1997) |
| bone corpuscle | <pathology> Osteoblast that is embedded in bony tissue and which is relatively inactive. (18 Nov 1997) |
| bridge corpuscle | <cell biology> Specialised cell junction characteristic of epithelia into which intermediate filaments (tonofilaments of cytokeratin) are inserted. The gap between plasma membranes is of the order of 25-30nm and the intercellular space has a medial band of electron dense material. Desmosomes are particularly conspicuous in tissues such as skin that have to withstand mechanical stress. Origin: Gr. Soma = body (18 Nov 1997) |
| ghost corpuscle | A hypochromic, crescent-shaped erythrocyte, probably resulting from artifactual rupture of a red cell with loss of haemoglobin. Synonym: achromacyte, achromatocyte, ghost corpuscle, phantom corpuscle, Ponfick's shadow, shadow corpuscle, shadow, Traube's corpuscle. Origin: G. A-priv. + chroma, colour, + kytos, hollow (cell) (05 Mar 2000) |
| red corpuscle | A red blood cell. (18 Nov 1997) |
| Mazzoni corpuscle | A tactile corpuscle apparently identical with Krause's end bulb. See: Golgi-Mazzoni corpuscle. (05 Mar 2000) |
| renal corpuscle | The tuft of glomerular capillaries and the capsula glomeruli that encloses it. Synonym: corpusculum renis, malpighian corpuscles. (05 Mar 2000) |
| cement corpuscle | <dentistry> A cementocyte contained within a lacuna or crypt of the cementum of a tooth; an entrapped cementoblast. (05 Mar 2000) |
| Meissner's corpuscle | One of numerous oval bodies found in the papillae of the skin, especially those of the fingers and toes; they consist of a connective tissue capsule in which the axon fibrils terminate around and between a pile of wedge-shaped epithelioid cells. Synonym: corpusculum tactus, Meissner's corpuscle, oval corpuscle, touch corpuscle. (05 Mar 2000) |
| reticulated corpuscle | <haematology> Immature red blood cells normally restricted to the bone marrow and present in the blood stream in very low numbers (0.2-2%). An increase in numbers indicates increased proliferation in the bone marrow, for example following chemotherapy. (09 Oct 1997) |
| Golgi corpuscle | <cell biology> An encapsulated sensory nerve ending similar to a pacinian corpuscle but simpler in structure. Tactile corpuscles found in the subcutaneous tissue of the fingertips, resembling pacinian corpuscles, but possessing fewer lamellae and a relatively larger cone, and having the contained fibres more extensively branched. (12 Mar 2000) |
| Golgi-Mazzoni corpuscle | <cell biology> An encapsulated sensory nerve ending similar to a pacinian corpuscle but simpler in structure. Tactile corpuscles found in the subcutaneous tissue of the fingertips, resembling pacinian corpuscles, but possessing fewer lamellae and a relatively larger cone, and having the contained fibres more extensively branched. (12 Mar 2000) |
| Merkel's corpuscle | A specialised tactile sensory nerve ending in the epidermis, characterised by a terminal cuplike expansion of an intraepidermal axon in contact with the base of a single modified keratinocyte. Synonym: meniscus tactus, Merkel's corpuscle, Merkel's tactile cell, Merkel's tactile disk, tactile disk. (05 Mar 2000) |