| MC | mass casualties; mast cell; Master of Surgery [Lat. Magister Chirurgiae]; maximum concentration; Med... |
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| MCC | Merkel Cell Carcinoma |
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| MC | Merkel cell |
| Merkel cell tumour | A rare malignant cutaneous tumour seen in sun-exposed skin of elderly patients composed of dermal nodules of small round cells with scanty cytoplasm in a trabecular pattern; the tumour cells contain cytoplasmic dense core granules resembling neurosecretory granules seen in Merkel cells. Synonym: primary neuroendocrine carcinoma of the skin, trabecular carcinoma. (05 Mar 2000) |
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| merkel cells | Nondendritic, nonkeratinocytic epithelial clear cells normally found in the epidermis and dermis of mammals and humans. They are believed to be of neuroendocrine origin and function as a specific slowly adapting sensory touch receptor. The merkel cell was first described by friedrich sigmund merkel, german anatomist in 1875. (12 Dec 1998) |
| 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) |
| Merkel's filtrum ventriculi | A groove between the two prominences, in each lateral wall of the vestibule of the larynx, formed by the cuneiform and the arytenoid cartilages. Synonym: Merkel's filtrum ventriculi. (05 Mar 2000) |
| Merkel's fossa | A groove in the posterolateral wall of the vestibule of the larynx between the corniculate and cuneiform cartilages. (05 Mar 2000) |
| Merkel's muscle | <anatomy> A fasciculus from the posterior cricoarytenoid muscle inserted into the inferior horn of the thyroid cartilage. Synonym: musculus ceratocricoideus, Merkel's muscle. (05 Mar 2000) |
| Merkel's tactile cell | 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) |
| Merkel's tactile disk | 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) |
| Merkel, Friedrich | <person> German anatomist and physiologist, 1845-1919. See: Merkel cell tumour, Merkel's corpuscle, Merkel's tactile cell, Merkel's tactile disk. (05 Mar 2000) |
| Merkel, Friedrich Sigmund | <person> Was Professor of Anatomy successively at Rostock, Konigsberg and Gottingen. Merkel's Corpuscles - one form of sensory "tactile" nerve ending. Lived: 1845-1919. B. Nuremburg, Apr 5th, 1845, d. May 28th, 1919. (05 Dec 1998) |
| Merkel, Karl | <person> German anatomist and laryngologist, 1812-1876. See: Merkel's filtrum ventriculi, Merkel's fossa, Merkel's muscle. (05 Mar 2000) |
| carcinoma, merkel cell | A carcinoma arising from merkel cells located in the basal layer of the epidermis and occurring most commonly as a primary neuroendocrine carcinoma of the skin. Merkel cells are tactile cells of neuroectodermal origin and histologically show neurosecretory granules. The skin of the head and neck are a common site of merkel cell carcinoma, occurring generally in elderly patients. (12 Dec 1998) |
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Synonyms : Merkel Receptors, Receptor, Merkel, Receptors, Merkel's, Cells, Merkel, Merkel Receptor, Merkel's Receptors, Merkels Receptor, Receptor, Merkel's, Receptors, Merkel, Receptors, Merkels
| Merkel c. |
a specialized cell at or near the epithelialdermal junction, characterized by numerous membrane-bound granules with dense cores, some desmosomes, cytoplasmic microfilaments, intranuclear filaments bundled in parallel to form rodlets, and spikelike processes that interdigitate with keratinocytes. They are believed to act as touch receptors by association with flat, disklike endings of nerve fibers (tactile menisci).
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Merkel cell (corpuscle, disk, tactile cell) |
see under cell.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Merkel cell c. |
a rapidly growing malignant dermal or subcutaneous tumor occurring on sun-exposed areas in middle-aged or older adults and containing irregular anastomosing trabeculae and small dense granules typical of Merkel cells; whether these are the cells of origin is still under debate. Called also neuroendocrine or trabecular c. of the skin and Merkel cell tumor.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Merkel cell t. |
see under carcinoma.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Merkel tactile c. |
Merkel c.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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