| IO | incisal opening; inferior oblique; inferior olive; internal os; interorbital; intestinal obstruction... |
|---|---|
| LAO | left anterior oblique; left atrial overload; Licentiate of the Art of Obstetrics |
| LIO | left inferior oblique |
| LOIH | left oblique inguinal hernia |
| LPO | lactoperoxidase; left posterior oblique; light perception only; lipid peroxidation |
| 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 arc | A line carried over the cranium from the centre of one external auditory meatus to that of the other. Synonym: interauricular arc. (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) |
| auricular cartilage | The cartilage of the auricle. Synonym: cartilago auriculae, cartilage of ear, conchal cartilage. (05 Mar 2000) |
| auricular complex | P wave in the electrocardiogram. Synonym: auricular complex. (05 Mar 2000) |
| auricular extrasystole | A premature contraction of the heart arising from an ectopic atrial focus. Synonym: auricular extrasystole. (05 Mar 2000) |
| auricular fissure | A fissure separating the tympanic portion from the mastoid portion of the temporal bone; it transmits the auricular branch of the vagus nerve. Synonym: fissura tympanomastoidea, auricular fissure, tympanomastoid suture. (05 Mar 2000) |
| auricular ganglion | An autonomic ganglion situated below the foramen ovale medial to the mandibular nerve; its postganglionic, parasympathetic fibres are distributed to the parotid gland. Synonym: ganglion oticum, Arnold's ganglion, auricular ganglion, otoganglion. (05 Mar 2000) |
| auricular index | Relation of the width to the height of the auricle or pinna: (width of pinna × 100)/length of pinna. (05 Mar 2000) |
| auricular ligaments | The three ligaments that attach the auricle to the side of the head: anterior auricular ligament (ligamentum auriculare anterius), which extends from the root of the zygomatic process to the spine of the helix; posterior auricular ligament (ligamentum auriculare posterius), which extends from the mastoid process to the conchal eminence; superior auricular ligament (ligamentum auriculare superius), which extends from the superior margin of the osseous external acoustic meatus to the spine of the helix. Synonym: ligamenta auricularia, Valsalva's ligaments. (05 Mar 2000) |
| auricular notch | 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) |
| auricular point | A craniometric point at the centre of the opening of the external acoustic meatus; or, in certain cases, the middle of the upper edge of this opening. Synonym: auricular point. Origin: L. Auricularis, pertaining to the ear (05 Mar 2000) |
| auricular reflex | A movement of the ears in animals in response to a sound; part of the investigatory reflex. (05 Mar 2000) |