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A Section approximately at Right Angles to the Long Axis of the Heart

A Section approximately at Right Angles to the Long Axis of the Heart.jpg A Minute Portion of the Pulp of the SpleenThumbnailsBiceps Muscle in ActionA Minute Portion of the Pulp of the SpleenThumbnailsBiceps Muscle in ActionA Minute Portion of the Pulp of the SpleenThumbnailsBiceps Muscle in ActionA Minute Portion of the Pulp of the SpleenThumbnailsBiceps Muscle in ActionA Minute Portion of the Pulp of the SpleenThumbnailsBiceps Muscle in Action

A Section approximately at Right Angles to the Long Axis of the Heart, exposing the Four Valves which lie very nearly in the Same Plane.

The semilunar valve which guards the aperture of the pulmonary artery is the nearest to the breast-bone.