Heart Outflow Septation Movie

Embryology - 4 Dec 2023 Expand to Translate
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<html5media height="520" width="300">File:heart1 ventricle.mp4</html5media>

A cutaway view of the heart outflow tract

The fused endocardial cushions are shown and the animation shows the growth of the spiral membranous septa that divide the single outflow tract into aortic and pulmonary outflows from the heart. Note the spiral nature of this septation process "swaps" the left/right ventricle to vessels anatomical relationship.

green - right bulbar ridge
yellow - left bulbar ridge

Outflow Septation Links: MP4 version | Quicktime version | Tutorial - Outflow Tract | Advanced - Cardiac Septation | Ventricular Septal Defects

Historic Embryology - Cardiovascular
1902 Vena cava inferior \| 1905 Brain Blood Vessels \| 1909 Cervical Veins \| 1909 Dorsal aorta and umbilical veins \| 1912 Heart \| 1912 Human Heart \| 1914 Earliest Blood-Vessels \| 1915 Congenital Cardiac Disease \| 1915 Dura Venous Sinuses \| 1916 Blood cell origin \| 1916 Pars Membranacea Septi \| 1919 Lower Limb Arteries \| 1921 Human Brain Vascular \| 1921 Spleen \| 1922 Aortic-Arch System \| 1922 Pig Forelimb Arteries \| 1922 Chicken Pulmonary \| 1923 Head Subcutaneous Plexus \| 1923 Ductus Venosus \| 1925 Venous Development \| 1927 Stage 11 Heart \| 1928 Heart Blood Flow \| 1935 Aorta \| 1935 Venous valves \| 1938 Pars Membranacea Septi \| 1938 Foramen Ovale \| 1939 Atrio-Ventricular Valves \| 1940 Vena cava inferior \| 1940 Early Hematopoiesis \| 1941 Blood Formation \| 1942 Truncus and Conus Partitioning \| Ziegler Heart Models \| 1951 Heart Movie \| 1954 Week 9 Heart \| 1957 Cranial venous system \| 1959 Brain Arterial Anastomoses \| Historic Embryology Papers \| 2012 ECHO Meeting \| 2016 Cardiac Review \| Historic Disclaimer

Outflow Septation

bulbar ridge

Term describing a spiral region in the developing heart bulbus cordis, there is a left and right bulbar ridge, that contribute to the septation of membranous portion of ventricular septum that is continuous with the outflow tract. These regions fuse to separate the single embryonic outflow tract into the aortic and pulmonary arteries.

(More? Heart Tutorial | Ventricular Septum Movie | Heart Outflow Septation Movie | Cardiovascular System Development | Lecture - Heart Development)

bulbus cordis

A region of the early developing heart tube forming the common outflow tract, will differentiate to form three regions of the heart.

Blood Pathway: sinus venosus -> atrium -> ventricle -> bulbus cordis (outflow tract)

(More? Cardiovascular System Development | Lecture - Heart Development)

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Cite this page: Hill, M.A. (2023, December 4) Embryology Heart Outflow Septation Movie. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Heart_Outflow_Septation_Movie

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