Primary interventricular foramen

Primary interventricular foramen
Details
Identifiers
Latin	foramen interventriculare primarium
Code	TE E5.11.1.3.2.0.14
*Anatomical terminology* [edit on Wikidata]

In human embryology, the primary interventricular foramen is a temporary opening between the developing ventricles of the heart. The ventricles arise as a single cavity that is divided by the developing interventricular septum. Before the septum closes completely, the remaining opening between the two ventricles is termed the interventricular foramen.

In some individuals, the foramen fails to close, leading to an interventricular septal defect known as a patent interventricular foramen^[1]

References

↑ Le, Tao; Bhushan, Vikas; Vasan, Neil (2010). First Aid for the USMLE Step 1: 2010 20th Anniversary Edition. USA: The McGraw-Hill Companies, Inc. p. 123. ISBN 978-0-07-163340-6.

Development of the circulatory system

Heart

Tubular heart	Truncus arteriosus Bulbus cordis Primitive ventricle Primitive atrium Sinus venosus

Septa	Atrioventricular cushions/Septum intermedium Primary interatrial foramen Septum primum Foramen secundum Septum secundum Foramen ovale Aorticopulmonary septum

Other	Atrioventricular canal Primary interventricular foramen 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

Extraembryonic
hemangiogenesis

Fetal circulation

umbilical cord: Umbilical vein → Ductus venosus → Inferior vena cava → Heart → Pulmonary artery → Ductus arteriosus → Aorta → Umbilical artery

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