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Fig. 33a. Mouse E14.5 Heart interventricular septum

The left hand panel is from a mouse at E14.5. The tubercles of the atrioventricular cushions have fused with the crest of the apical muscular septum, walling the aorta into the left ventricle, and closing the embryonic interventricular communication. The surface of the proximal outflow cushions have now muscularised (white dotted line). This area will form the free-standing infundibulum subsequent to attenuation of the core of the cushions (white star with black border).

The right hand panel, in four chamber section, is from the same episcopic dataset. It shows how the tubercles will become the membranous part of the septum, with the coalescing trabeculations which form the apical part of the septum also being well seen.


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, June 23) Embryology Anderson2016-fig33a.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Anderson2016-fig33a.jpg

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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