Development Animation - Heart Atrial Septation: Difference between revisions

Revision as of 23:12, 6 August 2010

Heart1_atrium icon.jpg</wikiflv>

Atrial Septation

Links: Intermediate - Atrial Ventricular Septation | Advanced - Cardiac_Septation

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

Terms

ostium primum - (primary opening, first opening) In early heart development during atrial septation, the initial septum primum is incomplete leaving this initial opening between the left and right atria. Later the septum primum begins to degenerate forming a second opening, the ostium secundum.

septum primum - (primary septum) In early heart development in the atrial wall a superior region in the midline extends downward, forming the initial incomplete separation (septation) of the right and left atria leaving an opening the ostium primum. This initial structure partially breaks down forming the ostium secundum and later fuses with the septum secundum. Note that complete functional and anatomical separation of the right and left atria occurs after birth with activation of the pulmonary system.

septum secundum - (secondary septum) In early heart development, atrial septation is completed by an atrial wall growth to the right of the initial septum primum. Note that complete functional and anatomical separation of the right and left atria occurs after birth with activation of the pulmonary system.

Source: UNSW Embryology Thanks to the late Prof William Larsen for allowing permission to use animations based on images from his textbook. (More? movie technical information)

Links: Movies Page | Category:Movies

Cite this page: Hill, M.A. (2024, April 18) Embryology Development Animation - Heart Atrial Septation. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Development_Animation_-_Heart_Atrial_Septation

What Links Here?

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-'''Terms'''
+==Terms==
+'''ostium primum''' - (primary opening, first opening) In early [[heart|heart]] development during atrial septation, the initial [[S#septum primum|septum primum]] is incomplete leaving this initial opening between the left and right atria. Later the [[S#septum primum|septum primum]] begins to degenerate forming a second opening, the [[O#ostium secundum|ostium secundum]].
 '''septum primum''' - (primary septum) In early [[heart|heart]] development in the atrial wall a superior region in the midline extends downward, forming the initial incomplete separation ([[S#septation|septation]]) of the right and left atria leaving an opening the [[O#ostium primum|ostium primum]]. This initial structure partially breaks down forming the [[O#ostium secundum|ostium secundum]] and later fuses with the [[S#septum secundum|septum secundum]]. Note that complete functional and anatomical separation of the right and left atria occurs after birth with activation of the pulmonary system.