Posterior descending artery
| Posterior descending artery | |
|---|---|
anterior interventricular LMA = left marginal PIA/PDA = posterior descending AVN = atrioventricular nodal VEINS: SCV = small cardiac ACV = anterior cardiac AIV/GCV = great cardiac MCV = middle cardiac CS = coronary sinus | |
| Details | |
| Source | right coronary artery |
| Vein | middle cardiac vein, posterior interventricular vein[1] |
| Supplies | ventricles interventricular septum |
| Identifiers | |
| Latin | ramus interventricularis posterior arteriae |
| TA98 | A12.2.03.108 |
| TA2 | 4138 |
| FMA | 3840 |
| Anatomical terminology] | |
In the
apex of the heart where it meets with the left anterior descending artery also known as the anterior interventricular artery. The PDA supplies the posterior third of the interventricular septum. The remaining anterior two-thirds is supplied by the left anterior descending artery, which is a branch of left coronary artery
.
It is typically a branch of the
circumflex coronary artery (10%, known as left dominance) which itself is a branch of the left coronary artery. It can also be supplied by an anastomosis of the left and right coronary artery (20%, known as co-dominance).[2]
Variants have been reported.[3]
The anatomical position of the artery is not really posterior, but inferior. The terminology posterior is based on viewing the heart from the "Valentine" position, not by the heart's actual position in the body.[4]
Additional images
-
Human heart with coronary arteries
References
- PMID 9811219.
- ISBN 0-07-135694-0.
- PMID 9283726.
- PMID 15379923.
External links
- Anatomy figure: 20:04-04 at Human Anatomy Online, SUNY Downstate Medical Center - "Posterior view of the heart."
- Image
- Image at guidant.com
 | This cardiovascular system article is a stub. You can help Wikipedia by expanding it. |