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| {{Infobox Artery |
| | #Redirect [[Left anterior descending artery]] |
| Name = {{PAGENAME}} |
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| Latin = ramus interventricularis anterior arteriae coronariae sinistrae |
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| GraySubject = 142 |
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| GrayPage = 547 |
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| Image = Gray492.png |
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| Caption = Sternocostal surface of heart. (Anterior descending branch labeled at upper right.) |
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| Image2 = Gray505.png |
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| Caption2 = The arch of the aorta, and its branches. |
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| BranchFrom = [[left coronary artery]] |
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| BranchTo = |
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| Vein = |
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| Supplies = |
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| MeshName = |
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| MeshNumber = |
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| DorlandsPre = r_02 |
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| DorlandsSuf = 12690388 |
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| }}
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| {{SI}}
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| {{CMG}}
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| ===Overview===
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| The "LAD", or '''left anterior descending artery''' (or '''anterior interventricular branch of the [[left coronary artery]]''', or '''anterior descending branch''') passes at first behind the [[pulmonary artery]] and then comes forward between that vessel and the [[left auricula]] to reach the [[anterior interventricular sulcus]], along which it descends to the [[incisura apicis cordis]].
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| In 78% of cases, it reaches the [[apex of the heart]].
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| It supplies the anterolateral [[myocardium]], apex, and [[interventricular septum]]. The LAD typically supplies 45-55% of the [[left ventricle]] (LV).
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| The LAD gives off two types of branches: ''septals'' and ''diagonals''.
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| * Septals originate from the LAD at 90 degrees to the surface of the heart, perforating and supplying the intraventricular septum.
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| * Diagonals run along the surface of the heart and supply the lateral wall of the LV and the anterolateral [[papillary muscle]].
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| ==External links==
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| * {{eMedicineDictionary|anterior+interventricular+branch%20of%20left%20coronary%20artery}}
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| * {{SUNYAnatomyLabs|20|09|01|02}} - "Heart: The Left Coronary Artery and its Branches"
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| * {{SUNYAnatomyFigs|20|03|08}} - "Anterior view of the heart."
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| * {{GPnotebook|168165435}}
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| {{Gray's}}
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| {{Arteries of chest}}
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| [[Category:Cardiology]]
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| [[Category:Arteries]]
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| [[Category:Anatomy]]
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