File:Anderson2016-fig26b.jpg

Fig. 26b. Mouse E13.5 Heart Aortic Root

The images are from the same mouse heart at E13.5.

The left hand panel, in the long axis, shows how the aortic root has become reorientated so as to be supported above the cavity of the left ventricle, although the interventricular communication remains patent. The superior and inferior atrioventricular (AV) cushions have now fused, and will eventually become the aortic, or anterior, leaflet of the mitral valve, which eventually achieves fibrous continuity with the developing leaflets of the aortic valve. At the stage shown in the left hand panel, however, the muscular inner heart curvature still interposes between the leaflets of the developing aortic and mitral valves.

This is also well seen in the right hand panel, taken in short axis. The white dotted line shows the line of fusion between the left ventricular components of the superior and inferior atrioventricular cushions, with the white star showing the inner heart curvature. Note that, at this stage, the fused major cushions guard the larger part of the developing mitral valvar orifice, with the left lateral cushion being relatively small.

Figure Links: 1 Heart tube mouse E8 | 2 Ventricular loop mouse E8 | 3 Heart mouse E10.5 | 4 Atrial component mouse E10.5 | 5 Sinus horns mouse E8.5 | 6 Venous valve mouse E10.5 | 7a Left atrium CS14 | 7b Atrioventricular canal CS14 | 8a Atrioventricular canal mouse E10.5 | 8b Outflow tract mouse E10.5 | 9a Atrioventricular canal CS14 | 9b Right ventricle CS14 | 10 Ventricular septal defect | fig 11a | fig 11b | fig 12a | fig 12b | fig 13a | fig 13b | fig 14 | fig 15a | fig 15b | fig 16a | fig 16b | fig 17a | fig 17b | fig 18 | fig 19 | fig 20 | fig 21 | fig 22 | fig 23 | fig 24a | fig 24b | fig 25a | fig 25b |fig 26a | fig 26b | fig 27a | fig 27b | fig 28a | fig 28b | fig 29a | fig 29b | fig 30 | fig 31 | fig 32a | fig 32b | fig 33a | fig 33b | fig 34a | fig 34b | fig 35a | fig 35b | fig 36 | fig 37 | fig 38 | fig 39a | fig 39b | fig 40a | fig 40b | fig 41a | fig 41b | fig 42a | 42b | 43a Stenotic pulmonary valve | 43b Stenotic aortic valve | fig 44a | fig 44b | fig 45a | fig 45b | fig 46a | fig 46b | fig 47 | fig 48 | fig 49 | fig 50a | fig 50b | Figure Gallery

Reference

Anderson RH. Teratogenecity in the setting of cardiac development and maldevelopment. (2016)

Cite this page: Hill, M.A. (2024, April 19) Embryology Anderson2016-fig26b.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Anderson2016-fig26b.jpg

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