close-up of human heart anatomy model. artery, cardiology, medicine, organ, aorta. red blood vessels, body medicals. anatomical

anatomy health artery cardiology medicine organ human aorta red biology science illustration blood body medicals anatomical heartbeat coronary healthy surgery vein muscle life pump background cardiac pulse care system hospital cardiovascular vascular symbol real white cardiologist graphic atrium transplant circulation inflammation circulatory education threedimensional disease illness sickness healthcare diagnosis treatment