| ECG | Electro-Cardio-Graphy(-Gram); ½ÉÀüµµ = EKG 1. Conducting System Structu... |
|---|---|
| TNM | primary tumor, regional nodes, metastasis [tumor staging]; thyroid node metastases; tumor node metas... |
| S-T | [segment] in electrocardiography, the portion of the segment between the end of the S wave and the b... |
| ASMD | anterior segment mesenchymal dysgenesis; atonic sclerotic muscle dystrophy |
| CAAX [box] | protein segment in which C is cysteine, A is usually but not always an aliphatic amino acid, and X i... |
| DLN | Draining lymph nodes |
|---|---|
| PALN | Para-aortic lymph nodes |
| TBLN | Tracheobronchial lymph nodes |
| III CS | III connecting segment |
| OS | Outer segment |
| Ranvier's crosses | Black or brown figures in the shape of a cross, marking Ranvier's nodes in the longitudinal section of a nerve stained with silver nitrate. (05 Mar 2000) |
|---|---|
| Ranvier's segment | The portion of a myelinated nerve fibre between two successive nodes. Synonym: interannular segment, internode, Ranvier's segment, segmentum internodale. (05 Mar 2000) |
| ranvier's nodes | Regularly spaced gaps in the myelin sheaths of peripheral axons. Ranvier's nodes allow saltatory conduction, that is, jumping of impulses from node to node, which is faster and more energetically favourable than continuous conduction. (12 Dec 1998) |
| hair crosses | Crosslike figures formed by hairs growing from two directions that meet and then separate in a direction perpendicular to the original orientation. Synonym: hair crosses. (05 Mar 2000) |
| Ranvier, Louis | <person> French pathologist, 1835-1922. See: Ranvier's crosses, Ranvier's disks, Ranvier's node, Ranvier's plexus, Ranvier's segment. (05 Mar 2000) |
| Ranvier, Louise Antoine | <person> Was a Physician and Histologist. Professor in the College of France, Paris. Ranvier's Nodes - short specialised interruptions in the myelin sheath occurring along myelinated nerve fibres. Responsible for saltatory conduction. Lived: 1835-1922. B. Lyons, 1835, d. 1922. (05 Dec 1998) |
| Ranvier's disks | Tactile nerve endings, of cupped disklike form, in the skin. (05 Mar 2000) |
| Ranvier's node | A short interval in the myelin sheath of a nerve fibre, occurring between each two successive segments of the myelin sheath; at the node, the axon is invested only by short, finger-like cytoplasmic processes of the two neighboring Schwann cells or, in the central nervous system, oligodendroglia cells. See: myelin sheath. (05 Mar 2000) |
| Ranvier's plexus | A subbasal stroma plexus of the cornea. See: stroma plexus. (05 Mar 2000) |
| node of Ranvier | <anatomy, physiology> A region of exposed neuronal plasma membrane in a myelinated axon. Nodes contain very high concentrations of voltage gated ion channels and are the site of propagation of action potentials by saltatory conduction. (18 Nov 1997) |
| anterior basal segment | Anterior basal segment of inferior lobe of right and left lung; lies between middle lobe and diaphragm. Synonym: segmentum basale anterius. (05 Mar 2000) |
| anterior eye segment | That part of the eyeball anterior to the lens. (12 Dec 1998) |
| anterior inferior segment | Anterior inferior segment of kidney. Synonym: segmentum anterius inferius. (05 Mar 2000) |
| anterior ocular segment | That portion of the eye comprising the cornea, iris, lens, and their associated chambers and adnexa. (05 Mar 2000) |
| anterior segment | A delimited part or section of an organ or other structure which lies in front of or ventral to the other similar parts or sections. 1) segmentum anterius (hepar); the anterior segment of the right lobe of the liver. 2) segmentum anterius (pulmo dexter et sinister); [S 3]; the anterior segment of the superior lobe of the right and left lungs. 3) anterior segment of the eye; the intraocular segment of the eyeball occupied by the aqueous which lies in front of, and is separated from the vitreous-filled posterior segment by, the lens and zonule; it is subdivided by the iris into anterior and posterior chambers. Synonym: segmentum anterius. (05 Mar 2000) |
| Ranvier's crosses, nodes, segment (internode), tactile disks |
see under cross, disk, and node, and see internodal segment under segment.
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