Interventricular septum - wikipedia Interventricular septum Interventricular septum Section of the heart showing the ventricular septum. Interior of dorsal half of heart of human embryo of about thirty - five days. ( Labeled as ' septum inferius ' ) Details Part of Heart Artery anterior interventricular branch of left coronary artery and Posterior interventricular artery Identifiers Latin septum interventriculare cordis MeSH D054088 TA A12. 1.00. 013 FMA 7133 Anatomical terminology ( edit on Wikidata ) This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. ( May 2015 ) The interventricular septum ( IVS, or ventricular septum, or during development septum inferius ), is the stout wall separating the ventricles, the lower chambers of the heart, from one another. The ventricular septum is directed obliquely backward to the right, and curved with the convexity toward the right ventricle ; its margins correspond with the anterior and posterior interventricular sulci. The lower part of the septum which is the major part, is thick and muscular and its much smaller upper part is thin and membraneous. Contents 1 Structure 1.1 Blood supply 2 Development 3 Clinical significance 4 Additional images 5 References 6 External links Structure Beginning of the interventricular septum shown at 28 days The interventricular septum, is the stout wall separating the ventricles, the lower chambers of the heart from one another. The ventricular septum is directed obliquely backward to the right, and curved with the convexity toward the right ventricle ; its margins correspond with the anterior and posterior longitudinal sulci. The greater portion of it is thick and muscular and constitutes the muscular interventricular septum. Its upper and posterior part, which separates the aortic vestibule from the lower part of the right atrium and upper part of the right ventricle, is thin and fibrous, and is termed the membranous ventricular septum. Blood supply The posterior interventricular artery supplies the posterior 1 / 3 of the interventricular septum. The remaining anterior 2 / 3 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. Development Main article : Heart development The muscular part of the interventricular septum derives from the bulboventricular flange which is developed due to differential growth of primitive ventricle and bulbous cordis. Membranous part has a neural crest origin which connects the upper free margin of the bulboventricular flange and anterior and posterior endocardial cushions of atrio ventricular canal. It also gets attached to lower border of spiral septum or the aortico pulmonary septum. Clinical significance A ventricular septal defect ( VSD ), a hole in the interventricular septum is one of the four congenital defects of the condition of tetralogy of Fallot. A VSD can cause a left - to - right shunt of blood flow in the heart, and is one of the most common of the congenital heart defects. This type of shunt is an acyanotic disorder that can result in ventricular hypertrophy. Additional images Heart normal short axis echo References Jump up ^ `` Interventricular septum ''. Jump up ^ Reviews, C.T.I. ( 26 September 2016 ). `` Human Anatomy ''. Cram101 Textbook Reviews. Jump up ^ Pillitteri, Adele ( 2010 ). `` Maternal & Child Health Nursing : Care of the Childbearing & Childrearing Family ''. Lippincott Williams & Wilkins. External links Look up interventricular septum in Wiktionary, the free dictionary. Wikimedia Commons has media related to ECHOpedia case ' Ventricular septum defect with right to left shunt '. Histology image : 128_06 at the University of Oklahoma Health Sciences Center - `` Heart and semilunar valve '' 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, crista supraventricularis ), → 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 Bachmann 's bundle 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 Development of the circulatory system Heart Tubular heart Truncus arteriosus Bulbus cordis Primitive ventricle Primitive atrium Sinus venosus Chamber formation Atrioventricular Primary interventricular foramen Endocardial cushions Septum intermedium Atrioventricular canal Atrial Septum primum Foramen secundum Primary interatrial foramen Septum secundum Foramen ovale Other Aorticopulmonary septum Protein signalling in heart development Vessels Arteries Dorsal aorta Aortic arches Aortic sac Veins Anterior cardinal vein Posterior cardinal vein Common cardinal veins Lymph vessels Lymph sacs Other Vascular remodelling in the embryo Extraembryonic hemangiogenesis Blood islands Chorion Connecting stalk Yolk sac Placenta Fetal circulation umbilical cord : Umbilical vein → Ductus venosus → Inferior vena cava → Heart → Pulmonary artery → Ductus arteriosus → Aorta → Umbilical artery yolk sac : Vitelline veins Vitelline arteries Retrieved from `` https://en.wikipedia.org/w/index.php?title=Interventricular_septum&oldid=856245281 '' Categories : Cardiac anatomy Hidden categories : Pages with unresolved properties Articles lacking sources from May 2015 All articles lacking sources Talk Contents About Wikipedia Bosanski Eesti Español Français Italiano עברית Nederlands 日本 語 Norsk Norsk nynorsk Polski Português Українська 5 more Edit links This page was last edited on 23 August 2018, at 21 : 35 ( UTC ). 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Question: what is the function of the interventricular septum in the heart
Answer: separating the ventricles, the lower chambers of the heart from one another