the doctor uses the image as an educational tool, simplifying the concept of pulmonary embolism to ensure patients comprehend the

pulmonary artery blood vessel circulatory system oxygenation heart function arterial lung connection vital transport cardiovascular anatomy oxygen supply circulation flow aorta branch deoxygenated trunk right ventricle exchange arteries respiratory health valve pathway gases vascular cardiac output main oxygenated lungs branching capillaries process hypertension oxygenrich physiology ventricular delivery disease levels pumping cardiopulmonary veins