Right marginal artery
Citation, DOI, disclosures and article data
Citation:
Dimitrijevic M, Weerakkody Y, Hacking C, et al. Right marginal artery. Reference article, Radiopaedia.org (Accessed on 10 Mar 2025) https://doi.org/10.53347/rID-61233
Permalink:
rID:
61233
Article created:
24 Jun 2018,
Mila Dimitrijevic
Disclosures:
At the time the article was created Mila Dimitrijevic had no recorded disclosures.
View Mila Dimitrijevic's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Yuranga Weerakkody had no recorded disclosures.
View Yuranga Weerakkody's current disclosures
Revisions:
8 times, by
4 contributors -
see full revision history and disclosures
Sections:
Tags:
Synonyms:
- Acute marginal branch
- Acute marginal branch artery
- Acute marginal arteries
- Right intermediate atrial branch
- Acute marginal artery
- Right marginal arteries
The right marginal artery, also known as the acute marginal artery or right intermediate atrial branch, supplies the surrounding right atrial tissues 1,2 and, in 10-15% of cases, provides the main arterial supply to the sinus node 3,4.
Gross anatomy
Origin
It arises from the inferior border of the right coronary artery at the acute right margin of the heart, ascending over the anterolateral surface of the right atrium 1,2.
Its origin is marked by the presence of a small fatty excrescence or a cardiac vein adjacent to the artery that drains into the wall of the right atrium 5.
Course
The right marginal artery passes to the left along the acute margin of the right ventricle 1,2. It often has a much higher origin and passes obliquely down over the front of the ventricle 1.
See also
References
- 1. Boppana VS, Castaño A, Avula UMR, Yamazaki M, Kalifa J. Atrial Coronary Arteries: Anatomy And Atrial Perfusion Territories. (2011) Journal of atrial fibrillation. 4 (3): 375. doi:10.4022/jafib.375 - Pubmed
- 2. McMinn RMH, editor. Last’s Anatomy Regional and Applied. 9th edition. Edinburgh: Churchill Livingstone; 1998. ISBN: 9780729537520
- 3. Vieweg WV, Alpert JS, Hagan AD. Origin of the sinoatrial node and atrioventricular node arteries in right, mixed, and left inferior emphasis systems. (1975) Catheterization and cardiovascular diagnosis. 1 (4): 361-73. Pubmed
- 4. Krupa U. Studies on the coronary vascularization of atria of the heart. (1982) Folia morphologica. 41 (2): 207-15. Pubmed
- 5. Busquet J, Fontan F, Anderson RH, Ho SY, Davies MJ. The surgical significance of the atrial branches of the coronary arteries. (1984) International journal of cardiology. 6 (2): 223-36. Pubmed
- 6. O'Brien JP, Srichai MB, Hecht EM, Kim DC, Jacobs JE. Anatomy of the heart at multidetector CT: what the radiologist needs to know. (2007) Radiographics : a review publication of the Radiological Society of North America, Inc. 27 (6): 1569-82. doi:10.1148/rg.276065747 - Pubmed
- 7. Sunil Kini, Kostaki G. Bis, Leroy Weaver. Normal and Variant Coronary Arterial and Venous Anatomy on High-Resolution CT Angiography. (2012) American Journal of Roentgenology. doi:10.2214/AJR.06.1295
Incoming Links
Related articles: Anatomy: Thoracic
- thoracic skeleton[+][+]
- thoracic cage
- thoracic spine
- articulations
- muscles of the thorax[+][+]
- diaphragm
- intercostal space
- intercostal muscles
- variant anatomy
- spaces of the thorax[+][+]
- thoracic viscera[+][+]
- lower respiratory tract
-
heart
- cardiac chambers
- heart valves
- cardiac fibrous skeleton
- innervation of the heart
- development of the heart
- cardiac wall
-
pericardium
- epicardium
- epicardial fat pad
- pericardial space
- oblique pericardial sinus
- transverse pericardial sinus
-
pericardial recesses
- aortic recesses
- pulmonic recesses
- postcaval recess
- pulmonary venous recesses
- pericardial ligaments
- myocardium
- endocardium
-
pericardium
- esophagus
- thymus
- breast
- arterial supply of the thorax
-
thoracic aorta (development)
-
ascending aorta
-
aortic root
- aortic annulus
-
coronary arteries
- coronary arterial dominance
- myocardial segments
-
left main coronary artery (LMCA)[+][+]
- ramus intermedius artery (RI)
-
circumflex artery (LCx)
- obtuse marginal branches (OM1, OM2, etc))
- Kugel's artery
-
left anterior descending artery (LAD)
- diagonal branches (D1, D2, etc)
- septal perforators (S1, S2, etc)
-
right coronary artery (RCA)
- conus artery
- sinoatrial nodal artery
- acute marginal branches (AM1, AM2, etc)
- inferior interventricular artery (PDA)
- posterior left ventricular artery (PLV)
- congenital anomalies
- sinotubular junction
-
aortic root
- aortic arch[+][+]
- aortic isthmus[+][+]
- descending aorta[+][+]
-
ascending aorta
- pulmonary trunk[+][+]
-
thoracic aorta (development)
- venous drainage of the thorax[+][+]
- superior vena cava (SVC)
- inferior vena cava (IVC)
-
coronary veins
-
cardiac veins which drain into the coronary sinus
- great cardiac vein
- middle cardiac vein
- small cardiac vein
- posterior vein of the left ventricle
- vein of Marshall (oblique vein of the left atrium)
- anterior cardiac veins
- venae cordis minimae (smallest cardiac veins or thebesian veins)
-
cardiac veins which drain into the coronary sinus
- pulmonary veins
- bronchial veins
- thoracoepigastric vein
- lymphatics of the thorax[+][+]
- innervation of the thorax[+][+]
Unable to process the form. Check for errors and try again.