| LA | lactic acid; large amount; laser angioplasty; late abortion; late antigen; latex agglutination; left... |
|---|---|
| MA | malignant arrhythmia; management and administration; mandelic acid; masseter; Master of Arts; matern... |
| mA, ma | milliampere; meter-angle |
| MAR | main admissions room; marasmus; marrow; maximal aggregation ratio; medication administration record;... |
| MAS | magic angle spinning; Manifest Anxiety Scale; maximum average score; McCune-Albright syndrome; mecon... |
| visual angle | The angle formed at the retina by the meeting of lines drawn from the periphery of the object seen. (05 Mar 2000) |
|---|---|
| pectinate ligaments of iridocorneal angle | The network of fibres (pectinate ligaments) at the iridocorneal angle between the anterior chamber of the eye and the venous sinus of the sclera; it contains spaces between the fibres that are involved in drainage of the aqueous humor, and is composed of two portions: the corneoscleral part, the part attached to the sclera, and the uveal part, the part attached to the iris. Synonym: reticulum trabeculare sclerae, Gerlach's valvula, Hueck's ligament, ligamentum annulare bulbi, pectinate ligaments of iridocorneal angle, pillar of iris, trabecular meshwork, trabecular network, trabecular zone. (05 Mar 2000) |
| Vogt's angle | A craniometric angle formed by the nasobasilar and alveolonasal lines. Origin: K. Vogt (05 Mar 2000) |
| cephalic angle | One of several angle's formed by the intersection of two lines passing through certain points of the face or cranium. (05 Mar 2000) |
| cephalomedullary angle | The angle made by the junction of the cerebrum and the brain stem. (05 Mar 2000) |
| pelvivertebral angle | The angle made by the pelvis as defined by the plane of the superior pelvic aperture with the general axis of the trunk or vertebral column. See: inclination of pelvis. (05 Mar 2000) |
| cerebellopontile angle | <anatomy, oncology> The angle between the cerebellum and the pons, a common site for the growth of acoustic neuromas. (16 Dec 1997) |
| cerebellopontine angle | <anatomy, oncology> The angle between the cerebellum and the pons, a common site for the growth of acoustic neuromas. (16 Dec 1997) |
| cerebellopontine angle syndrome | <syndrome> A syndrome due most commonly to an acoustic tumour in the region between the cerebellum and pons, and marked by ataxia, nystagmus, tinnitus, deafness, disturbances of labyrinth function, and involvement of any of the cranial nerves, fifth, sixth, seventh, ninth, or tenth. (05 Mar 2000) |
| cerebellopontine angle tumour | This is a benign tumour of the 8th cranial nerve that affects approximately 1 out of 100,000 people. This tumour arises from the myelin forming Schwann cells that coat the 8th cranial nerve (acoustic nerve). Clinical presentation usually includes hearing deficit. Diagnosis can be made with auditory evoked potentials and/or MRI scanning of the brain. Vertigo and tinnitus may be associated symptoms. Surgical removal of this tumour involves dissection, cautery and obliteration with laser. Causes: acoustic neuroma (90%), meningioma (7%), epidermoid (3%), uncommon: metastasis, trigeminal neuroma, arachnoid cyst, aneurysm, vertebro-basilar dolichoectasia (12 Dec 1998) |
| mesial angle | The angle formed by the meeting of the mesial with the labial (or buccal) or lingual surface of a tooth. (05 Mar 2000) |
| right angle clamp | A clamp with a short 90 |
| metafacial angle | The angle between the pterygoid processes and the base of the skull. Synonym: Serres' angle. (05 Mar 2000) |
| meter angle | The amount of convergence required to view binocularly an object 1 meter distant and exerting 1 diopter of accommodation. Synonym: unit of ocular convergence. (05 Mar 2000) |
| Rolando's angle | The angle which the fissure of Rolando (central sulcus) makes with the midplane. (05 Mar 2000) |