| LMC | large motile cell; lateral motor column; left main coronary [artery]; left middle cerebral [artery];... |
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| LMCA | left main coronary artery; left middle cerebral artery |
| LMCAD | left main coronary artery disease |
| LMS | lateral medullary syndrome; left main stem [coronary artery]; leiomyosarcoma; Licentiate in Medicine... |
| MAIN | medication-induced, autoimmune, infectious, and neoplastic [diseases associated with antiphospholipi... |
| MOB | main olfactory bulb |
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| MPA | main pulmonary artery |
| MS | main stream |
| left main bronchus | It arises at the bifurcation of the trachea, passes in front of the oesophagus and enters the hilum of the left lung where it divides into a superior lobe bronchus and an inferior lobe bronchus. It is longer, of narrower caliber, and more nearly-horizontal than the right main bronchus, hence, aspirated objects enter it less frequently. Synonym: bronchus principalis sinister. (05 Mar 2000) |
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