Extreme Pressure Exerted Upon the Heart Muscle Due to Fluid Filling the Pericardial Sac

Superior View of the Human Brain Resting Protected Within the Cranial Vault of the Skull

The Heart Found Within the Body of an Adult Male Human

The Heart Located Inside the Chest of an Adult Male Body

Electrical Pathway of the Cardiac Conduction System Located Deep Inside the Male Heart Walls

The Flexed Knee Joint Showing Articulation Between the Femur and Tibia

Articulation of the Patella Against the Femoral Groove During the Motion of Knee Flexion

Dynamic Movement of Blood Passing Through the Main Arteries Attached to the Human Heart