Tricuspid valve - wikipedia Tricuspid valve This article may require copy editing for grammar, style, cohesion, tone, or spelling. You can assist by editing it. ( September 2017 ) `` Tricuspid '' redirects here. For the type of tooth, see dental anatomy. Tricuspid valve Anterior ( frontal ) view of the opened heart. White arrows indicate normal blood flow. ( Tricuspid valve labeled at bottom left. ) Base of ventricles exposed by removal of the atria. ( Tricuspid valve visible at bottom right. ) Details Identifiers Latin Valvula tricuspidalis, valva atrioventricularis dextra MeSH A07. 541.510. 893 Dorlands / Elsevier 12843894 TA A12. 1.02. 003 FMA 7234 Anatomical terminology ( edit on Wikidata ) The tricuspid valve, or right atrioventricular valve, is on the right dorsal side of the mammalian heart, between the right atrium and the right ventricle. The function of the valve is to prevent back flow of blood into the right atrium. Contents 1 Structure 2 Function 3 Clinical significance 4 Additional images 5 References 6 External links Structure The normal tricuspid valve usually has three leaflets and three papillary muscles. They are connected to the papillary muscles by the chordae tendineae, which lie in the right ventricle. Tricuspid valves will not always consist of three leaflets and may also occur with two or four leaflets ; the number may change during one 's lifetime. Function See also : Heart valves This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. ( September 2017 ) The tricuspid valve prevents back flow of blood from the right ventricle into the right atrium during ventricular systole when the valve closes and allows blood to flow from right atrium into right ventricle during ventricular diastole when it opens. This valve is weakened by drug abuse, and can lead to heart failure through the back flow of blood. The back flow of blood is also known as regression or tricuspid regurgitation. Clinical significance Play media Video explanation of tricuspid valve disease Tricuspid regurgitation is not uncommon in the tricuspid valve. It is common for a valve to be infected resulting in endocarditis in intravenous drug users. Patients who inject narcotics or other drugs intravenously may introduce infection, which will travel to the right side of the heart, most often caused by the bacteria S. aureus. In other patients without a history of intravenous exposure, endocarditis is more frequently left - sided. The tricuspid valve can be affected by rheumatic fever, which can cause tricuspid stenosis or tricuspid insufficiency ( also called tricuspid regurgitation ). Some patients are born with congenital abnormalities of the tricuspid valve. Congenital apical displacement of the tricuspid valve is called Ebstein 's anomaly and typically causes significant tricuspid regurgitation. Certain carcinoid syndromes can affect the tricuspid valve by producing fibrosis due to serotonin production by those tumors. The first endovascular tricuspid valve implant was performed by surgeons at the Cleveland Clinic. Additional images Tricuspid valve. Deep dissection. References Jump up ^ Richard Van Pragh : Cardiac anatomy in A.C. Chang et al. : Pediatric Cardiac Intensive Care, Philadelphia 1998. Jump up ^ Wolters Kluwer & Nicolas Dietz. `` Tricuspid Valve ''. US National Library of Medicine. Jump up ^ Healthline Editorial Team. `` Right atrioventricular valve ( Tricuspid valve ) ''. Healthline. Jump up ^ Demin AA, Drobysheva VP, Vel'ter OIu ( 2000 ). `` ( Infectious endocarditis in intravenous drug abusers ) ''. Klinicheskaia meditsina ( in Russian ). 78 ( 8 ) : 47 -- 51. PMID 11019526. Jump up ^ Butany J, Dev V, Leong SW, Soor GS, Thangaroopan M, Borger MA ( 2006 ). `` Infective endocarditis of the tricuspid valve ''. Journal of cardiac surgery. 21 ( 6 ) : 603 -- 4. PMID 17073968. doi : 10.1111 / j. 1540 - 8191.2006. 00313. x. ^ Jump up to : Mitchell RS, Kumar V, Robbins SL, Abbas AK, Fausto N ( 2007 ). Robbins Basic Pathology ( 8th ed. ). Saunders / Elsevier. pp. 406 -- 8. ISBN 1 - 4160 - 2973 - 7. Jump up ^ Tricuspid valve disease Mount Sinai Hospital, New York Jump up ^ University Circle Inc. External links Anatomy figure : 20 : 07 - 04 at Human Anatomy Online, SUNY Downstate Medical Center Photo of model at Waynesburg College circulation / tricuspidvalve04 Cardiac Valve Animations - Perioperative Interactive Education Group - Cardiac Valve Animations Anatomy of the heart General Surface base apex sulci coronary interatrial anterior interventricular posterior interventricular borders right left Internal atria interatrial septum pectinate muscles terminal sulcus ventricles interventricular septum trabeculae carneae chordae tendineae papillary muscle valves cusps atrioventricular septum cardiac skeleton intervenous tubercle Chambers Right heart ( venae cavae, coronary sinus ) → right atrium ( atrial appendage, fossa ovalis, limbus of fossa ovalis, crista terminalis, valve of inferior vena cava, valve of coronary sinus ) → tricuspid valve → right ventricle ( infundibulum, moderator band / septomarginal trabecula ) → pulmonary valve → ( pulmonary artery and pulmonary circulation ) Left heart ( pulmonary veins ) → left atrium ( atrial appendage ) → mitral valve → left ventricle → aortic valve ( aortic sinus ) → ( aorta and systemic circulation ) Layers Endocardium heart valves Myocardium Conduction system cardiac pacemaker SA node AV node bundle of His bundle branches Purkinje fibers Pericardial cavity pericardial sinus Pericardium fibrous pericardium sternopericardial ligaments serous pericardium epicardium / visceral layer fold of Left vena cava Blood supply Circulatory system Coronary circulation Coronary arteries Retrieved from `` https://en.wikipedia.org/w/index.php?title=Tricuspid_valve&oldid=807137105 '' Categories : Cardiac anatomy Heart valves Hidden categories : CS1 Russian - language sources ( ru ) Wikipedia articles needing copy edit from September 2017 All articles needing copy edit Medicine infobox template using GraySubject or GrayPage Medicine infobox template using Dorlands parameter Articles needing additional references from September 2017 All articles needing additional references Talk Contents About Wikipedia Azərbaycanca Bosanski Català Čeština Deutsch Emiliàn e rumagnòl فارسی Français Galego 한국어 Italiano Nederlands 日本 語 Norsk nynorsk Polski Português Русский Українська 中文 Edit links This page was last edited on 26 October 2017, at 03 : 47. 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Question: where is the tricuspid valve located in the heart
Answer: right dorsal side of the mammalian heart, between the right atrium and the right ventricle