| mitral cells | Large nerve cell's in the olfactory lobe of the brain whose dendrites synapse (in glomeruli) with axons of the olfactory receptor cell's of the nasal mucous membrane, and whose axons pass centrally in the olfactory tract to the olfactory cortex. (05 Mar 2000) |
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| mitral commissurotomy | Opening the narrowed mitral orifice for the relief of mitral stenosis. (05 Mar 2000) |
| mitral facies | The pink, slightly cyanosed cheeks of patients with mitral valve disease. (05 Mar 2000) |
| mitral gradient | The diastolic pressure difference between the left atrium and left ventricle. (05 Mar 2000) |
| mitral incompetence | <cardiology> The back flow of blood from the left ventricle to the left atrium through a defective mitral bicuspid valve. The most common cause for mitral regurgitation is rheumatic fever. Other causes include: myocardial infarction, massive calcification of the mitral annulus (in the elderly), lupus, rheumatoid arthritis, infectious endocarditis and ankylosing spondylitis. (13 Nov 1997) |
| mitral insufficiency | Malfunction of the mitral valve. Mitral insufficiency allows the backflow of blood (regurgitation) from the left ventricle into the left atrium. (12 Dec 1998) |
| mitral murmur | A murmur produced at the mitral valve, either obstructive or regurgitant. (05 Mar 2000) |
| mitral orifice | An atrioventricular opening which leads from the left atrium into the left ventricle of the heart. Synonym: ostium atrioventriculare sinistrum, ostium arteriosum. (05 Mar 2000) |
| mitral prolapse | Drooping down or abnormal bulging of the mitral valve cusps during the contraction of the heart. (12 Dec 1998) |
| mitral regurgitation | <cardiology> The back flow of blood from the left ventricle to the left atrium through a defective mitral bicuspid valve. The most common cause for mitral regurgitation is rheumatic fever. Other causes include: myocardial infarction, massive calcification of the mitral annulus (in the elderly), lupus, rheumatoid arthritis, infectious endocarditis and ankylosing spondylitis. (13 Nov 1997) |
| mitral stenosis | <cardiology> A congenital or acquired heart valve abnormality that describes the narrowing and ineffective opening of the mitral valve. (13 Nov 1997) |
| mitral tap | The palpable equivalent of the opening snap of the mitral valve. (05 Mar 2000) |
| mitral valve | <anatomy, cardiology> The heart valve that divides the left atrium and left ventricle. During left atrial contraction, the mitral valve opens to allow blood to flow into the left ventricle. Upon closure, the mitral valve prohibits the regurgitation of blood back into the left atrium. The mitral valve is the only heart valve that has only 2 valve cusps (all others have 3). (13 Nov 1997) |
| mitral valve insufficiency | Backflow of blood from the left ventricle into the left atrium, owing to imperfect functioning of the mitral valve. (12 Dec 1998) |
| mitral valve prolapse | <cardiology> A systolic click-murmur syndrome, floppy-valve syndrome and billowing mitral leaflet syndrome. A common, but highly variable (most individuals are asymptomatic), clinical syndrome that has been described in up to 7% of all females in the 14 to 30 age group. There is also an increased familial incidence suggesting an autosomal dominant form of inheritance. Treatment often includes the avoidance of stimulants (caffeine, nicotine, decongestants) and the use of a beta-blocker medication in select cases. Inheritance: autosomal dominant. Synonym:: Barlow's syndrome. (13 Nov 1997) |