1500x2118pxhuman heart anatomy illustration, watercolor heart painting, heart shape medical care, red heart organ, cardiovascular system diagram, anatomical heart drawing, heart structure analysis
500x667pxhuman lung anatomy, respiratory system illustration, heart and lungs diagram, bronchus structure, pulmonary function, thoracic cavity, medical imaging analysis
700x700pxheart anatomy diagram, human heart ventricle, human body physiology, heart beat animation, cardiovascular system, medical illustration, organ structure analysis
