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Laboratory 20. Heart
Step 23. The Left Auricle

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Identify the left auricle and extend the inferior end of the incision towards the apex of the auricle. Identify the small region of pectinate muscles within the auricle [probe]. With the exception of this area, the walls of the left atrium are smooth.

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