| brown layer | An exceedingly delicate layer of loose, pigmented connective tissue on the inner surface of the sclera, connecting it with the choroid. Synonym: lamina fusca sclerae, brown layer, membrana fusca. (05 Mar 2000) |
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| brown lung | Obstructive airway disease with asthma produced by exposure to cotton dust, flax or hemp. See: byssinosis. (05 Mar 2000) |
| brown oedema | Oedema of the lungs associated with chronic passive congestion. (05 Mar 2000) |
| brown pellicle | A thin film (about 1 um), derived mainly from salivary glycoproteins, which forms over the surface of a cleansed tooth crown when it is exposed to the saliva. Synonym: acquired cuticle, acquired enamel cuticle, brown pellicle, posteruption cuticle. (05 Mar 2000) |
| Brown, Robert | <person> English botanist, 1773-1858. See: brownian motion, brownian movement, brownian-Zsigmondy movement. (05 Mar 2000) |
| Brown-Sequard, Charles | <person> French physiologist and neurologist, 1817-1894. See: Brown-Sequard's paralysis, Brown-Sequard's syndrome. (05 Mar 2000) |
| Brown-Sequard's paralysis | <neurology, syndrome> A type of spinal cord lesion that is characterised by hemiparaplegia and hyperesthesia, but with loss of motor function on the same side as the lesion and hemianaesthesia on the opposite side. (27 Sep 1997) |
| Brown-Sequard's syndrome | <neurology, syndrome> A type of spinal cord lesion that is characterised by hemiparaplegia and hyperesthesia, but with loss of motor function on the same side as the lesion and hemianaesthesia on the opposite side. (27 Sep 1997) |
| brown-sequard syndrome | <syndrome> A syndrome due to damage of one half of the spinal cord, resulting in ipsilateral paralysis below the level of the lesion and loss of discriminatory and joint sensation, and contralateral loss of pain and temperature sensation. Brown-sequard was a french physiologist, 1817-1894. The syndrome is also called brown-sequard disease and brown-sequard paralysis but this latter should not be confused with a flaccid paralysis seen in disorders of the urinary tract called by the same name. (12 Dec 1998) |
| brown's syndrome | <syndrome> An ophthalmology (eye) problem. Brown's syndrome presents as an abnormality at birth (congenitally) and is characterised by an inability to elevate the eyeball when also trying to move the eyeball to the outside. Brown's syndrome can also occur because of other conditions which affect the normal function of the eye muscles. (12 Dec 1998) |
| brown striae | Dark concentric lines crossing the enamel prisms of the teeth, seen in axial cross sections of the enamel. Synonym: brown striae, striae parallelae. (05 Mar 2000) |
| brown thrush | <zoology> A common American singing bird (Harporhynchus rufus), allied to the mocking bird; also called brown thrasher. Source: Websters Dictionary (01 Mar 1998) |
| brown tumour | A mass of fibrous tissue containing haemosiderin-pigmented macrophages and multinucleated giant cells, replacing and expanding part of a bone in primary hyperparathyroidism. (05 Mar 2000) |
| Paterson-Brown-Kelly syndrome | <syndrome> Limited elevation of the eye in adduction, appearing clinically as a paresis of the inferior oblique muscle, due to fascia contracting the superior oblique muscle on the same side. Synonym: Brown's syndrome, Paterson-Brown-Kelly syndrome. (05 Mar 2000) |
| Hines-Brown test | A cardiocirculatory challenge conventionally performed by immersing one hand in ice cold water for two or more minutes (as tolerated) to acutely raise the blood pressure, thus imposing resistance to ejection of blood from the left ventricle into the systemic arterial system and consequently acutely increased afterload (afterload = increased left ventricular wall stress). Synonym: Hines-Brown test. (05 Mar 2000) |