| 词条 | Posterior interventricular artery | |
| 释义 |
| Name = Posterior interventricular artery | Latin = ramus interventricularis posterior arteriae coronariae dextrae | Image = Gray491.png | Caption = Base and diaphragmatic surface of heart. (Posterior descending artery not visible, but it runs near the middle cardiac vein, which is labeled at the bottom.) | Image2 = Cardiac vessels.png | Caption2 = ARTERIES: RCA = right coronary AB = atrial branches SANB = sinuatrial nodal RMA = right marginal LCA = left coronary CB = circumflex branch LAD/AIB = 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 | BranchFrom = right coronary artery | BranchTo = | Vein = middle cardiac vein, posterior interventricular vein[1] | Supplies = ventricles interventricular septum }} In the coronary circulation, the posterior interventricular artery (PIV, PIA, or PIVA), most often called the posterior descending artery (PDA), is an artery running in the posterior interventricular sulcus to the apex of the heart where it meets with the anterior interventricular artery or also known as Left Anterior Descending artery. It supplies the posterior third of the interventricular septum. The remaining anterior two-thirds is supplied by the anterior interventricular artery which is a septal branch of the left anterior descending artery, which is a branch of left coronary artery. It is typically a branch of the right coronary artery (70%, known as right dominance). Alternately, the PIV can be 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 imagesReferences1. ^{{cite journal |vauthors=Nerantzis CE, Lefkidis CA, Smirnoff TB, Agapitos EB, Davaris PS |title=Variations in the origin and course of the posterior interventricular artery in relation to the crux cordis and the posterior interventricular vein: an anatomical study |journal=Anat. Rec. |volume=252 |issue=3 |pages=413–7 |date=November 1998 |pmid=9811219|doi=10.1002/(SICI)1097-0185(199811)252:3<413::AID-AR9>3.0.CO;2-9}} 2. ^{{cite book | last=Fuster | first=V |author2=Alexander RW |author3=O'Rourke RA | title=Hurst's The Heart | publisher=McGraw-Hill | year=2001 | page=53 | edition=10th | isbn=0-07-135694-0 }} 3. ^{{cite journal |vauthors=Topaz O, Holdaway B, Bailey NT, Vetrovec GW |title=Anatomic variant of the posterior interventricular coronary artery: implications for coronary angioplasty in acute myocardial infarction |journal=Clin Anat |volume=10 |issue=5 |pages=303–6 |year=1997 |pmid=9283726 |doi=10.1002/(SICI)1098-2353(1997)10:5<303::AID-CA2>3.0.CO;2-R}} 4. ^{{cite journal|doi=10.1111/j.0021-8782.2004.00330.x | volume=205 | title=Cardiac anatomy revisited | journal=Journal of Anatomy | pages=159–177 | last1 = Anderson | first1 = Robert H.| pmc=1571338 }} External links
1 : Arteries of the thorax |
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