Anatomy

Aorta
Aorta: The largest artery in the body. The aorta carries oxygen-rich blood away from the heart, to the rest of the body.
Arteries to Head and Arms
Arteries to Head and Arms: The brachiocephalic trunk, the left common carotid artery, and the left subclavian artery carry blood upwards.
Atrium (Left)
Atrium (Left): Thin-walled upper chamber of the heart that receives oxygenated blood from the lungs.
Atrium (Right)
Atrium (Right): Thin-walled upper chamber of the heart that receives deoxygenated blood from the rest of the body.
Inferior Vena Cava
Inferior Vena Cava: A large vein that delivers deoxygenated blood from the lower body into the heart.
Lungs
Lungs: Structures that inflate and deflate with air just like balloons. Everyone has 2 lungs, left and right. In the lungs, carbon dioxide travels from the blood to the air and oxygen travels from the air to the blood.
Pulmonary Arteries
Pulmonary Arteries: Blood vessels that carry deoxygenated blood from the heart to the lungs.
Superior Vena Cava
Superior Vena Cava: A large vein that delivers deoxygenated blood from the upper body into the heart.
Ventricle (Left)
Ventricle (Left): Lower chamber of the heart that pumps oxygenated blood to the body. The left ventricle has thicker walls than the right ventricle.
Ventricle (Right)
Ventricle (Right): Lower chamber of the heart that pumps deoxygenated blood into the lungs. The right ventricle has thinner walls than the left ventricle.