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Modality: Anatomic specimen

Orientation: Apical short axis view

Description: This apical short axis view is from the same heart as shown in image A010100-141a, but is taken closer to the base of the heart. It shows the coarsely trabeculated septal surface, and the trabecular component extending between the septum and the parietal wall of the right ventricle. On the inferior aspect of the right ventricle is the inferior papillary muscle, which supports the zone of apposition between the inferior, or mural, and the septal leaflets of the tricuspid valve. The moderator band arises from a prominent right ventricular trabeculation, the septomarginal trabeculation, and joins the anterior papillary muscle, which supports the antero-superior leaflet of the tricuspid valve. The section cuts through the junction of the inlet and trabecular component of the left ventricle, showing the origins of the superior-posterior and inferior-anterior papillary muscles of the mitral valve, which arise from the free wall of the left ventricle. The muscular interventricular septum is marked with red dots. It bulges to the right in the normal heart.
Contributor: Diane E. Spicer, BS

Institution: The Congenital Heart Institute of Florida (CHIF)

Image Label:  A010100-142a

Source of Image: The Congenital Heart Institute of Florida (CHIF)

Image Certification: pending

AWG Rating: pending