| ¿µ¹® | myelin sheath | ÇÑ±Û | ¸»ÀÌÁý |
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| CS | calf serum; campomelic syndrome; carcinoid syndrome; cardiogenic shock; caries-susceptible; carotid ... |
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| PALS | parietolateral lymphocyte sheath; pediatric advanced life support; prison-acquired lymphoproliferati... |
| GCTTS | Giant cell tumor of tendon sheath |
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| MPNST | Malignant Peripheral Nerve Sheath Tumour |
| ORS | Outer root sheath |
| FS | fibrous sheath |
| IRS | inner root sheath |
| sheath | A protective covering. The lower part of leaf enveloping stem or culm. A secreted, tubular structure formed around a chain of cells or around a bundle of filaments, cells within a sheath may or may not subsequently separate from the sheath. A layer of outer membrane covering the bacterial flagella. (09 Oct 1997) |
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| sheath ligaments | See: fibrous digital sheaths of hand, fibrous digital sheaths of foot, fibrous tendon sheath. (05 Mar 2000) |
| sheath of eyeball | A condensation of connective tissue on the outer aspect of the sclera from which it is separated by a narrow cleftlike episcleral space; the sheath is attached to the sclera near the sclerocorneal junction and blends with the fascia of the extraocular muscles. Synonym: vagina bulbi, capsula bulbi, eye capsule, fascia bulbi, sheath of eyeball, Tenon's capsule, vagina oculi. (05 Mar 2000) |
| sheath of Key and Retzius | <anatomy> The delicate bands of connective tissue among nerve fibres. Origin: NL, fr. Gr. Within + a sinew, nerve. Source: Websters Dictionary (01 Mar 1998) |
| sheath of Schwann | <anatomy> The delicate outer sheath of a nerve fibre; the primitive sheath. The perineurium. Origin: NL, from gr. Nerve + peel, skin. Source: Websters Dictionary (01 Mar 1998) |
| sheath of Schweigger-Seidel | <geometry> A solid, all plane sections of which are ellipses or circles. See Conoid, 2 . The ellipsoid has three principal plane sections, a, b, and c, each at right angles to the other two, and each dividing the solid into two equal and symmetrical parts. The lines of meeting of these principal sections are the axes, or principal diameters of the ellipsoid. The point where the three planes meet is the center. Ellipsoid of revolution, a spheroid; a solid figure generated by the revolution of an ellipse about one of its axes. It is called a prolate spheroid, or prolatum, when the ellipse is revolved about the major axis, and an oblate spheroid, or oblatum, when it is revolved about the minor axis. Origin: Ellipse: cf. F. Ellipsoide. Source: Websters Dictionary (01 Mar 1998) |
| sheath of styloid process | A crest of bone (edge of the tympanic portion of the temporal bone) running from the front and medial side of the mastoid process to the spine of the sphenoid; it splits to ensheath the base of the styloid process. Synonym: vagina processus styloidei, vaginal process. (05 Mar 2000) |
| sheath of thyroid gland | Covering of the thyroid gland external to its capsule formed by a splitting of the pretracheal layer of deep cervical fascia at the gland's posterior border; the anterior lamina covers the gland anterolaterally, attaching to the arch of the cricoid cartilage superior to the isthmus of the gland (causing it to move with the trachea during elevation/depression of the larynx); the posterior lamina passes posterior to the oesophagus to blend with the buccopharyngeal fascia; inferiorly, the sheath extends along the inferior thyroid veins to open into the superior mediastinum (hence, expansion of the thyroid, as by goiter, can take this direction). (05 Mar 2000) |
| sheath process of sphenoid bone | A thin lamina of bone that extends medially under the body of the sphenoid bone from the medial lamina of the pterygoid process; it articulates with the vomer and the palatine bone. Synonym: processus vaginalis ossis sphenoidalis, sheath process of sphenoid bone. (05 Mar 2000) |
| sheath rot | ulcerative posthitis |
| sheath-winged | <zoology> Having elytra, or wing cases, as a beetle. Source: Websters Dictionary (01 Mar 1998) |
| sheathbill | <ornithology> Either one of two species of birds composing the genus Chionis, and family Chionidae, native of the islands of the Antarctic.seas. They are related to the gulls and the plovers, but more nearly to the latter. The base of the bill is covered with a saddle-shaped horny sheath, and the toes are only slightly webbed. The plumage of both species is white. Source: Websters Dictionary (01 Mar 1998) |
| sheathe | 1. To put into a sheath, case, or scabbard; to inclose or cover with, or as with, a sheath or case. "The leopard . . . Keeps the claws of his fore feet turned up from the ground, and sheathed in the skin of his toes." (Grew) "'T is in my breast she sheathes her dagger now." (Dryden) 2. To fit or furnish, as with a sheath. 3. To case or cover with something which protects, as thin boards, sheets of metal, and the like; as, to sheathe a ship with copper. 4. To obtund or blunt, as acrimonious substances, or sharp particles. To sheathe the sword, to make peace. Origin: Sheathed; Sheating Alternative forms: sheath. Source: Websters Dictionary (01 Mar 1998) |
| sheathed | 1. Povided with, or inclosed in, sheath. 2. <botany> Invested by a sheath, or cylindrical membranaceous tube, which is the base of the leaf, as the stalk or culm in grasses; vaginate. Source: Websters Dictionary (01 Mar 1998) |
| sheathed artery | <anatomy, artery> A subdivision of the penicillus of the spleen surrounded by macrophages and a reticular stroma. (05 Mar 2000) |
| annular part of fibrous digital sheath | One of the two circular fibrous bands of the fibrous sheaths of the fingers and toes attached to the shaft of the proximal and middle phalanges. Synonym: pars annularis vaginae fibrosae, annular pulley, annulus of fibrous sheath, ligamentum annulare digitorum. (05 Mar 2000) |
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| annulus of fibrous sheath | One of the two circular fibrous bands of the fibrous sheaths of the fingers and toes attached to the shaft of the proximal and middle phalanges. Synonym: pars annularis vaginae fibrosae, annular pulley, annulus of fibrous sheath, ligamentum annulare digitorum. (05 Mar 2000) |
| anterior layer of rectus abdominis sheath | The portion of the rectus sheath that lies anterior to the muscle, consisting in its upper two-thirds of contributions from the aponeuroses of the external and internal oblique muscles, and in its lower third (below the arcuralt line) of contributions from the aponeuroses of all three muscles of the anterolateral abdominal wall. Synonym: lamina anterior vaginae musculi recti abdominis. (05 Mar 2000) |
| arcuate line of rectus sheath | A crescentic line, not always clearly defined, which marks the lower limit of the posterior layer of the sheath of the rectus abdominis muscle. Synonym: linea arcuata vaginae musculi recti abdominis, Douglas' line, linea saemicircularis, saemicircular line. (05 Mar 2000) |
| axillary sheath | Fibrous neurovascular sheath, formed as an extension of the prevertebral layer of deep cervical fascia through the cervicoaxillary canal, which enclosed the first part of the axillary artery, the axillary vein, and the brachial plexus. (05 Mar 2000) |
| carotid sheath | The dense fibrous investment of the carotid artery, internal jugular vein, and vagus nerve on each side of the neck, deep to the sternocleidomastoid muscle; the layers of cervical fascia blend with it. Synonym: vagina carotica. (05 Mar 2000) |
| rectus sheath | Sheath of the rectus abdominis, formed by the aponeuroses of the three anterolateral muscles of the abdominal wall that split to enclose the rectus and fuse medially to form the linea alba; it consists of an anterior lamina and a posterior lamina, the latter being absent below the arcuate line. See: aponeurosis of external abdominal oblique muscle, aponeurosis of internal abdominal oblique muscle. Synonym: vagina musculi recti abdominis. (05 Mar 2000) |
| giant cell tumour of tendon sheath | A nodule, possibly inflammatory in nature, arising commonly from the flexor sheath of the fingers and thumb; composed of fibrous tissue, lipid-and haemosiderin-containing macrophages, and multinucleated giant cells. Synonym: localised nodular tenosynovitis. (05 Mar 2000) |
| parotid sheath | The part of the investing cervical fascia that ensheaths the parotid gland and is fixed above to the zygomatic arch. Synonym: fascia parotidea, fibrous capsule of parotid gland, parotid sheath. (05 Mar 2000) |
| Mauthner's sheath | <cell biology> Plasma membrane of an axon. (12 Mar 1998) |
| caudal sheath | A group of microtubules arranged cylindrically around the caudal pole of the nucleus in a developing spermatozoon. (05 Mar 2000) |
| resectoscope sheath | An operative sheath through which transurethral electroresection of bladder tumours or prostate gland can be performed. (05 Mar 2000) |
| medullary sheath | <anatomy, neurology> An insulating layer surrounding vertebrate peripheral neurons, that dramatically increases the speed of conduction. It is formed by specialised Schwann cells, that can wrap around neurons up to 50 times. The exposed areas are called nodes of Ranvier: they contain very high densities of sodium channels and action potentials jump from one node to the next, without involving the intermediate axon, a process known as saltatory conduction. (18 Nov 1997) |
| root sheath | One of the epidermic layers of the hair follicle: external root sheath is continuous with the stratum basale and stratum spinosum of the epidermis; internal root sheath comprises the cuticle of the internal roots, Huxley's layer, and Henle's layer. (05 Mar 2000) |
| Rouget-Neumann sheath | The amorphous ground substance between an osteocyte and the lacunar or canalicular wall. (05 Mar 2000) |
| sheath |
a protective covering for a knife or sword an enveloping structure or covering enclosing an animal or plant organ or part cocktail dress: a dress suitable for formal occasions
Ãâó: wordnet.princeton.edu/perl/webwn
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| sheath |
(SHEETH) -- Any leaflike structure in orchids that envelops the developing buds and emerging pseudobulbs.
Ãâó: www.psfdev.com/los/glossary/pltpts.html
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| sheath |
An organ that partly or wholly surrounds another organ, such as a sheath of a grass leaf surrounding the stem.
Ãâó: forest.moscowfsl.wsu.edu/rmrs_gtr118/glossary.html
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| sheath |
The lower part of the grass leaf which wraps around the stem. See drawing of parts of a grass plant.
Ãâó: www.lib.ksu.edu/wildflower/glossary.html
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| sheath |
the part of a grass leaf that encloses the stem below the collar region.
Ãâó: www.ipmalmanac.com/glossary/index.asp
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| sheath | a dress suitable for formal occasions |
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| sheath | a protective covering for a knife or sword |
| sheath | an enveloping structure or covering enclosing an animal or plant organ or part |
| sheath | a knife with a fixed blade that is carried in a sheath |
| sheath | a pile in a row of piles driven side by side to retain earth or prevent seepage |
| sheath | plunge or bury in flesh, as of a knife, sword, or tusk |
| sheath | enclose with a sheath |
| sheath | cover with a protective sheathing |
| sheath | enclosed in a protective covering |
| sheath | protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior |
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