File:Mall1912-fig11.jpg: Difference between revisions

Latest revision as of 17:27, 31 July 2017

(No. 353). X 50. The ventricles have been cut off. The connective tissue septa are colored yellow.

the right cushion marks the center of the anlage of the anterior and posterior cusps of the tricuspid valve, and the left the anlage of the posterior cusp of the mitral valve. The septum aorto pulmonale soon blends with the cushions through a dorso—lateral wing which is divided into two branches to encircle in part the right Venous ostium, one of which blends with the right lateral endocardial thickening, and ‘the other, thepmedial, blends with the anterior process of the medial valves now represented by the right lower wing of the anterior endocardial cushion. It is thus seen that through the blending of the septum aorto pulmonale with the right side of the anterior endocardial cushion, the right venous ostium is nearly encircled by endothelial connective tissue. This connection may still be seen in the adult heart where the septum aorto-pulmonale (the tendon of the conus) is found to blend with the fibrous ring of the right ostium at the anterior border of the attachment of the medial cusp of the tricuspid valve.

Mall Figure Legend
A - atrium A.C. - atrial canal A.Cu. - anterior endocardial cushion A.F. - annulus fibrosus A.O. - aorta A.P. - anterior papillary muscle B.S. - bulbo-spiral band A.V.B. - atria-ventricular bundle B. - bulb C.S. - coronary sinus I.V.C. - interventricular canal	F.O.¹ - foramen ovale I F.O.² - foramen ovale II L.A. - left atrium L.Cu. - left endocardial cushion L.0. - left venous ostium L.P. - large papillary muscle of the right ventricle L.R.V. - longitudinal bundle of the right; ventricle L.V. - left. ventricle M.p.m. - medial papillary muscle P. - pulmonary artery	P.Cu. - posterior endocardial cushion P.P. - posterior papillary muscle R.A. - right atrium R.Cu. - right endocardial cushion R.O - right venous ostium R.V. - right ventricle S.A. - septum of the atria S.S. - sino-spiral band S.V. - septum of the ventricle V. - ventricle

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This paper by Franklin Mall uses his human embryo collection that will eventually form the beginning of the Carnegie Collection.

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

Some of the numbered embryo used in this paper:

Cite this page: Hill, M.A. (2024, April 19) Embryology Mall1912-fig11.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Mall1912-fig11.jpg

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 ==Fig. 11. View from below of a model of the heart of an embryo 11 mm long==
-(No. 353). X 50. The ventricles have been cut off. The connective tissue septa are colored yellow.
+(No. {{CE353}}). X 50. The ventricles have been cut off. The connective tissue septa are colored yellow.
+* the right cushion marks the center of the anlage of the anterior and posterior cusps of the tricuspid valve, and the left the anlage of the posterior cusp of the mitral valve. The septum aorto pulmonale soon blends with the cushions through a dorso—lateral wing which is divided into two branches to encircle in part the right Venous ostium, one of which blends with the right lateral endocardial thickening, and ‘the other, thepmedial, blends with the anterior process of the medial valves now represented by the right lower wing of the anterior endocardial cushion. It is thus seen that through the blending of the septum aorto pulmonale with the right side of the anterior endocardial cushion, the right venous ostium is nearly encircled by endothelial connective tissue. This connection may still be seen in the adult heart where the septum aorto-pulmonale (the tendon of the conus) is found to blend with the fibrous ring of the right ostium at the anterior border of the attachment of the medial cusp of the tricuspid valve.
 {{Mall1912 figures}}
+[[Category:Carnegie Embryo 353]]