Heart Structure

• Prevents blood from flowing back into the right ventricle after it has entered the pulmonary artery.

  Pulmonary Valve
• Prevents blood from flowing back into the right atrium after it has entered the right ventricle

  Tricuspid Valve
• Vein that brings oxygen- poor blood from the lower part of the body to the right atrium.

  Inferior Vena Cava
• Prevents blood from flowing back into the left atrium after it has entered the left ventricle

  Bicuspid Valve
• Prevents blood from flowing back into the left ventricle after it has entered the aorta

  Aortic Valve
• Bring oxygen-poor blood to the lungs from the heart

  Pulmonary Arteries
• Brings oxygen-rich blood from the left ventricle to the body

  Aorta
• Large vein that brings oxygen-poor blood from the upper part of the body to the right atrium

  Superior Vena Cava
• Bring oxygen-rich blood from each of the lungs to the left atrium

  Pulmonary Veins
• Has thicker walls (myocardium) because it needs to pump blood out into the body and go against gravity (pressure gradient)

  Left Ventricle