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Laboratory 20. Heart
Step 24. The Interatrial Septum

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On the right side of the anterior wall of the left atrium, identify the interatrial septum.

Identify also the left atrioventricular orifice between the left atrium and left ventricle. The left atrioventricular valve which guards this opening will be examined in detail during Step 26.

Links and References:
Netter: 209
Rohen/Yokochi: 240