Add the posterior papillary muscles of the left ventricle.
Add the anterior papillary muscles of the left ventricle.
Add the trabeculae carneae of the left ventricle. These muscular ridges line the inner surface of the ventricular wall and help with contraction efficiency.
Add the left myocardium, representing the thick muscular layer responsible for generating systemic blood pressure.
Rotate this individual's model to the anatomical position.
Add the diaphragm and rib cage to visualize the spatial relationship between the heart, its valves, the sternum, and ribs.
You may wish to dissect away the sternum and some of the costal cartilages to fully expose and examine these anatomical relationships.
