| AI | accidental injury; accidentally incurred; adiposity index; aggregation index; allergy and immunology... |
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| ALI | acute lung injury; annual limit of intake; average lobe index |
| APIP | additional personal injury protection |
| ASCI | acute spinal cord injury; American Society for Clinical Investigation |
| ASIA | American Spinal Injury Association |
| facial eczema | A photosensitivity disease of sheep in New Zealand associated with ingestion of plants during periods when autumn rains produce lush growth following seasons of dryness and close grazing; the predisposing cause is hepatic disease, which results from toxins of the fungus Pithomyces chartarum, which grows on the plants. (05 Mar 2000) |
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| facial eminence | Prominent portion of the medial eminence, just rostral to the medullary striae in the rhomboidal fossa; it is formed by the internal genu of the facial nerve and the abducens nucleus around which the facial fibres curve. Synonym: colliculus facialis, abducens eminence, eminentia abducentis, eminentia facialis, facial eminence, facial hillock. (05 Mar 2000) |
| facial expression | Observable changes of expression in the face in response to emotional stimuli. (12 Dec 1998) |
| facial hemiatrophy | Atrophy of one half of the face which is sometimes progressive, and is of unknown cause. (12 Dec 1998) |
| facial hemiatrophy of Romberg | Atrophy of one half of the face which is sometimes progressive, and is of unknown cause. (12 Dec 1998) |
| facial hemiplegia | Paralysis of one side of the face, the muscles of the extremities being unaffected. (05 Mar 2000) |
| facial hillock | Prominent portion of the medial eminence, just rostral to the medullary striae in the rhomboidal fossa; it is formed by the internal genu of the facial nerve and the abducens nucleus around which the facial fibres curve. Synonym: colliculus facialis, abducens eminence, eminentia abducentis, eminentia facialis, facial eminence, facial hillock. (05 Mar 2000) |
| facial index | Relation of the length of the face to its maximal width between the zygomatic prominences; to get (05 Mar 2000) |
| facial injuries | General or unspecified injuries to the soft tissue or bony portions of the face. (12 Dec 1998) |
| facial lymph nodes | A chain of lymph nodes lying along the facial vein that receive afferent vessels from the eyelids, nose, cheek, lip, and gums, and send efferent vessels to the submandibular nodes. Synonym: nodi lymphatici faciales. (05 Mar 2000) |
| facial motor nucleus | A group of motor neurons located in the ventrolateral region of the lower pontine tegmentum and innervating the facial muscles, the stapedius muscle in the middle ear, the posterior limb of the musculus digastricus, and the stylohyoid muscle. Synonym: nucleus nervi facialis, facial motor nucleus, motor nucleus of facial nerve, nucleus facialis. (05 Mar 2000) |
| facial muscles | Muscles of facial expression or mimetic muscles that include the numerous muscles supplied by the facial nerve that are attached to and move the skin of the face. (12 Dec 1998) |
| facial myokymia | Myokymia that appears in the facial muscles, causing narrowing of the palpebral fissure and continuous undulation of the facial skin surface; the latter is referred to as "bag of worms" appearance and is best seen with reflected light; due to intrinsic brainstem lesion, such as a pontine glioma or multiple sclerosis. (05 Mar 2000) |
| facial neuralgia | <neurology> A disorder of trigeminal nerve (cranial nerve V) dysfunction. Synonym: tic douloureux. Characterised by excruciating paroxysms of pain in the lips, gums, cheek or chin, and, very rarely, in the distribution of the eye (ophthalmic division of the trigeminal nerve). (27 Sep 1997) |
| facial nucleus | A group of motor neurons located in the ventrolateral region of the lower pontine tegmentum and innervating the facial muscles, the stapedius muscle in the middle ear, the posterior limb of the musculus digastricus, and the stylohyoid muscle. Synonym: nucleus nervi facialis, facial motor nucleus, motor nucleus of facial nerve, nucleus facialis. (05 Mar 2000) |