Bassett Collection of Stereoscopic Images of Human Anatomy

Detailed dissection of heart

Ventricular myocardium, posterior view of deep layer

Image #120-7

KEYWORDS: Heart, Left heart, Muscles and tendons, Right heart.

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Higher resolution images are available for a fee. Contact Drew Bourn, PhD, MLIS.

Detailed dissection of heart
Ventricular myocardium, posterior view of deep layer
The superficial layer of myocardium (3) has been removed from the diaphragmatic surface of the left ventricle. The deep layer of myocardium (4), thus exposed, has been traced toward the right side of the heart. Along the posterior interventricular sulcus some of the fibers of this layer have been cut across to split open the interventricular septum into which much of the deep layer appears to turn.
1 . Left fibrous trigone
2 . Left atrioventricular opening
3 . Superficial layer of myocardium (lower pointer indicates cut edge of this layer)
4 . Deep layer of myocardium
5 . Ascending aorta
6 . Right fibrous trigone
7 . Right atrioventricular opening
8 . Membranous part interventricular septum (in depths of dissection)
9 . Muscular part interventricular septum (split open)
10 . Right ventricle (superficial layer of myocardium intact)
11 . Cut ends of fibers of deep layer of myocardium
12 . Notch at apex of heart
13 . Apex of heart
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