Ascending aorta - wikipedia Ascending aorta This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. ( September 2014 ) Ascending aorta The ascending aorta and aortic arch with their branches Course of the ascending aorta ( anterior view ), as it passes dorsally to the pulmonary trunk but ventrally to the right pulmonary artery. Details Precursor Truncus arteriosus Source Left ventricle Branches Left coronary artery, right coronary artery and continues as the aortic arch Vein Combination of superior and inferior vena cava and coronary sinus Supplies The entire body, with exception of the respiratory zone of the lung Identifiers Latin Aorta ascendens, pars ascendens aortae TA A12. 2.03. 001 FMA 3736 Anatomical terminology ( edit on Wikidata ) The ascending aorta ( AAo ) is a portion of the aorta commencing at the upper part of the base of the left ventricle, on a level with the lower border of the third costal cartilage behind the left half of the sternum. Contents 1 Structure 1.1 Components 1.2 Size 2 Relations 3 Branches 4 Clinical significance 5 Additional images 6 References 7 External links Structure It passes obliquely upward, forward, and to the right, in the direction of the heart 's axis, as high as the upper border of the second right costal cartilage, describing a slight curve in its course, and being situated, about 6 centimetres ( 2.4 in ) behind the posterior surface of the sternum. The total length is about 5 centimetres ( 2.0 in ). Components The aortic root is the portion of the aorta beginning at the aortic annulus and extending to the sinotubular junction. It is sometimes regarded as a part of the ascending aorta, and sometimes regarded as a separate entity from the rest of the ascending aorta. Between each commissure of the aortic valve and opposite the cusps of the aortic valve, three small dilatations called the aortic sinuses. The sinotubular junction is the point in the ascending aorta where the aortic sinuses end and the aorta becomes a tubular structure. Size A thoracic aortic diameter greater than 3.5 cm is generally considered dilated, whereas a diameter greater than 4.5 cm is generally considered to be a thoracic aortic aneurysm. Still, the average diameter in the population varies by for example age and sex. The upper limit of standard reference range of the ascending aorta may be up to 4.3 cm among large, elderly individuals. Relations At the union of the ascending aorta with the aortic arch the caliber of the vessel is increased, owing to a bulging of its right wall. This dilatation is termed the bulb of the aorta, and on transverse section presents a somewhat oval figure. The ascending aorta is contained within the pericardium, and is enclosed in a tube of the serous pericardium, common to it and the pulmonary artery. The ascending aorta is covered at its commencement by the trunk of the pulmonary artery and the right auricula, and, higher up, is separated from the sternum by the pericardium, the right pleura, the anterior margin of the right lung, some loose areolar tissue, and the remains of the thymus ; posteriorly, it rests upon the left atrium and right pulmonary artery. On the right side, it is in relation with the superior vena cava and right atrium, the former lying partly behind it ; on the left side, with the pulmonary artery. Branches The only branches of the ascending aorta are the two coronary arteries which supply the heart ; they arise near the commencement of the aorta from the aortic sinuses which are opposite the aortic valve. Clinical significance Porcelain aorta is extensive atherosclerotic calcification of the ascending aorta. It makes aortic surgery difficult, especially aortic cross-clamping, and incisions may result in excessive aortic injury and / or arterial embolism. Additional images Front view of heart and lungs. The arch of the aorta, and its branches. Fetal ascending aorta Ascending aorta Ascending aorta Ascending aorta Ascending aorta Ascending aorta Ascending aorta Ascending aorta References This article incorporates text in the public domain from page 545 of the 20th edition of Gray 's Anatomy ( 1918 ) Jump up ^ Logan, Carolynn M. ; Rice, M. Katherine ( 1987 ). Logan 's Medical and Scientific Abbreviations. Philadelphia : J.B. Lippincott Company. p. 3. ISBN 0 - 397 - 54589 - 4. Jump up ^ Nataf, P ( 2006 ). `` Dilation of the thoracic aorta : medical and surgical management ''. Heart. 92 ( 9 ) : 1345 -- 1352. doi : 10.1136 / hrt. 2005.074781. ISSN 1355 - 6037. PMC 1861150. Jump up ^ Freeman, Laura A. ; Young, Phillip M. ; Foley, Thomas A. ; Williamson, Eric E. ; Bruce, Charles J. ; Greason, Kevin L. ( 2013 ). `` CT and MRI Assessment of the Aortic Root and Ascending Aorta ''. American Journal of Roentgenology. 200 ( 6 ) : W581 -- W592. doi : 10.2214 / AJR. 12.9531. ISSN 0361 - 803X. Jump up ^ Bret P Nelson ( 2015 - 10 - 01 ). `` Thoracic Aneurysm ''. Medscape. Retrieved 2017 - 04 - 16. Jump up ^ Wolak, Arik ; Gransar, Heidi ; Thomson, Louise E.J. ; Friedman, John D. ; Hachamovitch, Rory ; Gutstein, Ariel ; Shaw, Leslee J. ; Polk, Donna ; Wong, Nathan D. ; Saouaf, Rola ; Hayes, Sean W. ; Rozanski, Alan ; Slomka, Piotr J. ; Germano, Guido ; Berman, Daniel S. ( 2008 ). `` Aortic Size Assessment by Noncontrast Cardiac Computed Tomography : Normal Limits by Age, Gender, and Body Surface Area ''. JACC : Cardiovascular Imaging. 1 ( 2 ) : 200 -- 209. doi : 10.1016 / j. jcmg. 2007.11. 005. ISSN 1936 - 878X. ^ Jump up to : Van Mieghem, Nicolas M. ; Van Der Boon, Robert M.A. ( 2013 ). `` Porcelain Aorta and Severe Aortic Stenosis : Is Transcatheter Aortic Valve Implantation the New Standard ? ''. Revista Española de Cardiología ( English Edition ). 66 ( 10 ) : 765 -- 767. doi : 10.1016 / j. rec. 2013.05. 008. ISSN 1885 - 5857. External links Arteries of the torso and chest Lungs Pulmonary artery Right Left ( Ligamentum arteriosum ) Heart Coronary circulation Right coronary : SA nodal AV nodal Atrial Right marginal Posterior interventricular Left coronary : Anterior interventricular Left circumflex ( Left marginal ) Aorta Sections Ascending aorta Aortic arch Descending aorta Thoracic aorta Abdominal aorta Aortic body Aortic arch Brachiocephalic Thyreoidea ima Right subclavian Right common carotid Left common carotid External carotid Internal carotid Carotid body Carotid sinus Carotid bifurcation Left subclavian Internal thoracic : Anterior intercostal Thymic Pericardiacophrenic Perforating branches terminal ( Musculophrenic, superior epigastric ) Costocervical trunk : Highest intercostal ( Posterior intercostal 1 -- 2 ) Deep cervical Descending aorta visceral : Bronchial Esophageal Mediastinal parietal : Posterior intercostal 3 -- 11 Subcostal Superior phrenic Anatomy portal Retrieved from `` https://en.wikipedia.org/w/index.php?title=Ascending_aorta&oldid=841434759 '' Categories : Wikipedia articles incorporating text from the 20th edition of Gray 's Anatomy ( 1918 ) Arteries of the thorax Aorta Hidden categories : Pages with unresolved properties Articles needing additional references from September 2014 All articles needing additional references Anatomy NAV infobox with use of other NAV parameters Talk Contents About Wikipedia Azərbaycanca Dansk Deutsch ދިވެހިބަސް Eesti Hrvatski Italiano Македонски Nederlands 日本 語 Português Русский Srpskohrvatski / српскохрватски ไทย 中文 7 more Edit links This page was last edited on 15 May 2018, at 20 : 40. 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Question: list the vessels that are direct branches of the ascending aorta
Answer: Left coronary artery, right coronary artery and continues as the aortic arch