| LAA | left atrial appendage; left atrial area; leukemia-associated antigen; leukocyte ascorbic acid |
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| LAC | La Crosse [virus]; lactase; left atrial circumflex [artery]; left atrial contraction; linguoaxiocerv... |
| LAD | lactic acid dehydrogenase; left anterior descending [artery]; left axis deviation; leukocyte adhesio... |
| LADA | laboratory animal dander allergy; left acromio-dorso-anterior [position]; left anterior descending a... |
| LADP | left acromio-dorso-posterior [position]; left anterior descending arterial pressure |
| left-footed | Denoting one who uses the left leg by preference. Synonym: left-footed. Origin: sinistro-+ L. Pes (ped-), foot (05 Mar 2000) |
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| left gastric artery | <anatomy, artery> Origin, coeliac; distribution, cardia of stomach at lesser curvature, abdominal part of the oesophagus, and, frequently, a portion of the left lobe of the liver via an aberrant left hepatic branch; anastomoses, oesophageal, right gastric. Synonym: arteria gastrica sinistra, coronary artery. (05 Mar 2000) |
| left gastric vein | <anatomy, vein> Arises from a union of veins from both surfaces of the cardia of the stomach and an oesophageal tributary from the cardiac portion of the oesophagus; it runs in the lesser omentum and empties into the portal vein. See: oesophageal veins. Synonym: vena gastrica sinistra, coronary vein, vena coronaria ventriculi. (05 Mar 2000) |
| left gastroepiploic artery | <anatomy, artery> Origin, splenic; distribution, greater curvature of stomach and greater omentum; anastomoses, right gastroepiploic and short gastric arteries. Synonym: arteria gastro-omentalis sinistra, arteria gastroepiploica sinistra, left gastro-omental artery. (05 Mar 2000) |
| left gastroepiploic vein | <anatomy, vein> The vein that accompanies the left gastroepiploic artery along the greater curvature of the stomach; it empties into the splenic vein. Synonym: vena gastro-omentalis sinistra, left gastroomental vein. (05 Mar 2000) |
| left gastro-omental artery | <anatomy, artery> Origin, splenic; distribution, greater curvature of stomach and greater omentum; anastomoses, right gastroepiploic and short gastric arteries. Synonym: arteria gastro-omentalis sinistra, arteria gastroepiploica sinistra, left gastro-omental artery. (05 Mar 2000) |
| left gastroomental vein | <anatomy, vein> The vein that accompanies the left gastroepiploic artery along the greater curvature of the stomach; it empties into the splenic vein. Synonym: vena gastro-omentalis sinistra, left gastroomental vein. (05 Mar 2000) |
| left-handed | 1. Having the left hand or arm stronger and more dexterous than the right; using the left hand and arm with more dexterity than the right. 2. Clumsy; awkward; unlucky; insincere; sinister; malicious; as, a left-handed compliment. "The commendations of this people are not always left-handed and detractive." (Landor) 3. Having a direction contrary to that of the hands of a watch when seen in front; said of a twist, a rotary motion, etc, looked at from a given direction. Left-handed marriage, a morganatic marriage. See Morganatic. Left-handed screw, a screw constructed to advance away from the observer, when turned, as in a nut, with a left-handed rotation. An ordinary wood screw is right-handed. Source: Websters Dictionary (01 Mar 1998) |
| left heart | The left atrium and left ventricle. (05 Mar 2000) |
| left heart bypass | Any procedure that shunts blood returning from the pulmonary circulation to the systemic circulation without passing through the left heart. This is utilised during some cardiac surgery and experimentally during severe left heart failure or cardiogenic shock. (05 Mar 2000) |
| left hepatic artery | <anatomy, artery> Left branch of proper hepatic artery; terminal branch off proper hepatic artery supplying left lobe of the liver. Synonym: ramus sinister arteriae hepaticae propriae. (05 Mar 2000) |
| left hepatic duct | The duct that drains bile from the left half of the liver, including the quadrate lobe and the left part of the caudate lobe. Synonym: ductus hepaticus sinister. (05 Mar 2000) |
| left hepatic veins | Veins draining the lateral segments [II & III] of the left lobe of the liver which join to form a single or paired trunk of variable size which usually (90% of the time) merges with that formed by the middle hepatic veins prior to entering the terminal portion of the superior vena cava. Synonym: venae hepaticae sinistrae. (05 Mar 2000) |
| left inferior pulmonary vein | <anatomy, vein> The vein returning oxygenated blood from the inferior lobe of the left lung to the left atrium. Synonym: vena pulmonalis inferior sinistra. (05 Mar 2000) |
| left lobe | The left subdivision of several glands, e.g., prostate, thyroid, thymus. Synonym: lobus sinister. (05 Mar 2000) |