| tungsten arc lamp | <apparatus> A lamp having highly compressed tungsten elements. (05 Mar 2000) |
|---|---|
| unipolar arc | <radiobiology> Arc between a metal surface and a plasma in contact with it. Such an arc requires only one electrode and is maintained by the thermal energy of the electrons. (09 Oct 1997) |
| flame arc | An arc between two impregnated electrodes that causes volatilization of the core with resultant flame. (05 Mar 2000) |
| longitudinal arc of skull | The line carried over the skull in the midline from the nasion to the opisthion. (05 Mar 2000) |
| anterior auricular | <anatomy, muscle> Origin, galea aponeurotica; insertion, cartilage of auricle; action, draws pinna of ear upward and forward; nerve supply, facial. Considered by some to be the anterior part of the temporoparietal muscle. Synonym: musculus auricularis anterior, musculus attrahens aurem, musculus attrahens auriculam, zygomaticoauricularis. (05 Mar 2000) |
| anterior auricular branches of superficial temporal artery | <anatomy, artery> Distribution, auricle, earlobe and external acoustic meatus. Synonym: rami auriculares anteriores arteriae temporalis superficialis. (05 Mar 2000) |
| anterior auricular groove | A notch between the supratragic tubercle and the crus of the helix. Synonym: incisura anterior auris, anterior auricular groove, auricular notch, sulcus auriculae anterior. (05 Mar 2000) |
| anterior auricular nerves | Branches of the auriculotemporal nerve that supply the tragus and upper part of the auricle. Synonym: nervi auriculares anteriores. (05 Mar 2000) |
| anterior auricular vein | <anatomy, vein> One of several veins draining the auricle and acoustic meatus and emptying into the retromandibular vein. Synonym: vena auricularis anterior, vena preauricularis. (05 Mar 2000) |
| auricular | <anatomy> Pertaining to an auricle or to the ear, and, formerly, to an atrium of the heart. Origin: L. Auricularis (18 Nov 1997) |
| auricular appendage | A small congenital skin tag usually located anterior to the tragus of the ear, often called a skin tag; more often unilateral than bilateral. (05 Mar 2000) |
| auricular appendix | A small conical ("ear-shaped") pouch projecting from the upper anterior portion of each atrium of the heart, increasing slightly the atrial volume. See: auricle of left atrium, auricle of right atrium. Synonym: auricula atrialis, atrial auricle, atrial auricula, auricle, auricula, auricular appendage, auricular appendix, skin tag. (05 Mar 2000) |
| auricular branch of occipital artery | <anatomy, artery> Distribution, posterior auricle; anastomosis, posterior auricular artery. Synonym: ramus auricularis arteriae occipitalis. (05 Mar 2000) |
| auricular branch of vagus nerve | <anatomy, nerve> A branch of the superior ganglion of the vagus, supplying the back of the pinna and the external acoustic meatus. Synonym: ramus auricularis nervi vagi, Arnold's nerve. (05 Mar 2000) |
| auricular canaliculus | The canal that extends from the jugular fossa laterally through the mastoid process. It transmits the auricular branch of the vagus. Synonym: canaliculus mastoideus, auricular canaliculus. (05 Mar 2000) |