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The right atrium

The right atrium

Circle of Willis

The circle of Willis arteries; the beginning of the blood supply to the brain.

Transpyloric Plane

Discussing the transpyloric plane or Addison's plane of the abdomen.

Transthoracic plane (thoracic plane, plane of Ludwig)

Transthoracic plane, (thoracic plane, plane of Ludwig)

Introduction to the heart

Introduction to the structure of the heart and its valves: tricuspid, pulmonary, mitral and aortic.