| COSTEP | Commissioned Officer Student Training and Extern Program |
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| extern | An advanced student or recent graduate who assists in the medical or surgical care of hospital patients; formerly, one who lived outside of the institution. Origin: F. Externe, outside, a day scholar (05 Mar 2000) |
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| external | <anatomy> Situated or occurring on the outside, many anatomical structures formerly called external are now more correctly termed lateral. Origin: L. Externus = outside (18 Nov 1997) |
| external absorption | The absorption of substances through skin, mucocutaneous surfaces, or mucous membranes. (05 Mar 2000) |
| external acoustic foramen | The orifice of the external acoustic meatus in the tympanic portion of the temporal bone. Synonym: porus acusticus externus, external acoustic foramen, external acoustic pore, external auditory pore, external auditory foramen, orifice of external acoustic meatus. (05 Mar 2000) |
| external acoustic meatus | The passage leading inward through the tympanic portion of the temporal bone, from the auricle to the tympanic membrane; it consists of a bony (inner) portion and a fibrocartilaginous (outer) portion, the cartilaginous external acoustic meatus. Synonym: meatus acusticus externus, acoustic meatus, antrum auris, auditory canal, external auditory meatus. (05 Mar 2000) |
| external acoustic pore | The orifice of the external acoustic meatus in the tympanic portion of the temporal bone. Synonym: porus acusticus externus, external acoustic foramen, external acoustic pore, external auditory pore, external auditory foramen, orifice of external acoustic meatus. (05 Mar 2000) |
| external anal sphincter | A fusiform ring of striated muscular fibres surrounding the anus, attached posteriorly to the coccyx and anteriorly to the central tendon of the perineum; it is subdivided, often indistinctly, into a subcutaneous part, a superficial part and a deep part for descriptive purposes. Synonym: musculus sphincter ani externus, external sphincter muscle of anus. (05 Mar 2000) |
| external aperture of cochlear canaliculus | The external opening of the cochlear aqueduct on the temporal bone medial to the jugular fossa. Synonym: apertura externa canaliculi cochleae. (05 Mar 2000) |
| external aperture of vestibular aqueduct | The external opening of the vestibular aqueduct on the posterior surface of the petrous part of the temporal bone near the groove for the sigmoid sinus. Synonym: apertura externa aqueductus vestibuli. (05 Mar 2000) |
| external arcuate fibres | They include: 1) dorsal external arcuate fibres that arise from cells in the accessory or lateral cuneate nucleus and pass to the cerebellum; 2) ventral external arcuate fibres that arise from the arcuate nuclei at the base of the medulla oblongata and pass around the lateral surface of the medulla; both enter the cerebellum as components of the restiform portion of the inferior cerebellar peduncle. Synonym: fibrae arcuatae externae. (05 Mar 2000) |
| external artery of nose | Origin, ophthalmic; external artery of the nose; distribution, skin of side of root of nose; anastomoses, angular artery. Synonym: arteria dorsalis nasi, arteria nasi externa, dorsal artery of nose, external artery of nose. (05 Mar 2000) |
| external auditory foramen | The orifice of the external acoustic meatus in the tympanic portion of the temporal bone. Synonym: porus acusticus externus, external acoustic foramen, external acoustic pore, external auditory pore, external auditory foramen, orifice of external acoustic meatus. (05 Mar 2000) |
| external auditory meatus | The passage leading inward through the tympanic portion of the temporal bone, from the auricle to the tympanic membrane; it consists of a bony (inner) portion and a fibrocartilaginous (outer) portion, the cartilaginous external acoustic meatus. Synonym: meatus acusticus externus, acoustic meatus, antrum auris, auditory canal, external auditory meatus. (05 Mar 2000) |
| external axis of eye | That part of the optic axis from the midpoint of anterior surface of the cornea to the posterior surface of the posterior pole of the external surface of the sclera. Synonym: axis bulbi externus. (05 Mar 2000) |
| external base of skull | External aspect of the base of skull Synonym: norma basilaris, basis cranii externa, norma inferior, norma ventralis. (05 Mar 2000) |
Synonyms : Device, External Fixation, Devices, External Fixation, External Fixation Device, External Fixation Devices, External Fixator, Fixation Device, External, Fixator, External, Fixators, External
| external nasal vein |
one of the veins that drain the external nose and empty into the angular or facial vein
Ãâó: wordnet.princeton.edu/perl/webwn
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| extern |
a nonresident doctor or medical student; connected with a hospital but not living there
Ãâó: wordnet.princeton.edu/perl/webwn
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| external |
happening or arising or located outside or beyond some limits or especially surface; "the external auditory canal"; "external pressures" coming from the outside; "extraneous light in the camera spoiled the photograph"; "relying upon an extraneous income"; "disdaining outside pressure groups" from or between other countries; "external commerce"; "international trade"; "developing nations need outside help" outward features; "he enjoyed the solemn externals of religion" purely outward or superficial; "external composure"; "an external concern for reputation"- A.R.Gurney,Jr.
Ãâó: wordnet.princeton.edu/perl/webwn
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| external auditory canal |
auditory meatus: either of the passages in the outer ear from the auricle to the tympanic membrane
Ãâó: wordnet.princeton.edu/perl/webwn
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| external carotid artery |
the branch of the carotid artery that supplies blood to the face and tongue and external parts of the head
Ãâó: wordnet.princeton.edu/perl/webwn
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| extern | a nonresident doctor or medical student |
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| extern | outward features |
| extern | exogenous |
| extern | happening or arising or located outside or beyond some limits or especially surface |
| extern | purely outward or superficial |
| extern | from or between other countries |
| extern | coming from the outside |
| extern | the supplement of an interior angle of a polygon |
| extern | either of the passages in the outer ear from the auricle to the tympanic membrane |
| extern | any body part visible externally |
| extern | the branch of the carotid artery that supplies blood to the face and tongue and external parts of the head |
| extern | the branch of the carotid artery that supplies blood to the face and tongue and external parts of the head |
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