BO VEISLAND / SCIENCE PHOTO LIBRARY BO VEISLAND / SCIENCE PHOTO LIBRARY
Human heart. Anatomical computer artwork of transverse sections through a human heart, showing all four cardiac chambers at different stages during the cardiac cycle. The first and second images show the heart at rest. The third image shows the heart during atrial systole - contraction of the atrium. The fourth image shows ventricular systole - contraction of the ventricle.
Model release not required. Property release not available.