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| a nerve fiber bundle that emerges from of the spinal cord and joins with another bundle to form each spinal nerve in the series of spinal nerves |
| a natural division or groove in an organ, as in the brain |
| mitral valve | |
| —n | |
| Also called: bicuspid valve the valve between the left atrium and the left ventricle of the heart, consisting of two membranous flaps, that prevents regurgitation of blood into the atrium | |
mitral valve n.
A valve of the heart, composed of two triangular flaps, that is located between the left atrium and left ventricle and regulates blood flow between these chambers. Also called bicuspid valve, left atrioventricular valve.
| mitral valve (mī'trəl) Pronunciation Key
A valve of the heart, composed of two triangular flaps, that is located between the left atrium and left ventricle. The mitral valve regulates blood flow between the two chambers. |