| Artery: Anterior interventricular branch of left coronary artery | |
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| Sternocostal surface of heart. (Anterior descending branch labeled at upper right.) | |
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| The arch of the aorta, and its branches. | |
| Latin | ramus interventricularis anterior arteriae coronariae sinistrae |
| Gray's | subject #142 547 |
| Supplies | anterolateral myocardium, apex, interventricular septum, 45-55% of the left ventricle (LV) |
| Source | left coronary artery |
| Branches | septals, diagonals |
The "LAD", or left anterior descending artery (or anterior interventricular branch of the left coronary artery, or anterior descending branch) is an artery of the heart.
Contents |
Course
It 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.
In 78% of cases, it reaches the apex of the heart.
Supply
It supplies the anterolateral myocardium, apex, and interventricular septum. The LAD typically supplies 45-55% of the left ventricle (LV).
Branches
The LAD gives off two types of branches: septals and diagonals.
- Septals originate from the LAD at 90 degrees to the surface of the heart, perforating and supplying the interventricular septum.
- Diagonals run along the surface of the heart and supply the lateral wall of the left ventricle and the anterolateral papillary muscle.
Additional images
 Heart attack |
 Cardiac vessels |
 Human heart with coronary arteries |
 Heart coronary territories |
External links
- anterior+interventricular+branch%20of%20left%20coronary%20artery at eMedicine Dictionary
- SUNY Labs 20:09-0102 - "Heart: The Left Coronary Artery and its Branches"
- SUNY Figs 20:03-08 - "Anterior view of the heart."
- 168165435 at GPnotebook
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated.
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