Heart & blood

Superior/ inferior vena cava

#1 blood vessel that enters into the right atrium

Left ventricle

#10 heart chamber that pumps blood into the aortic semilunar valve

Aortic semilunar valve

#11 valve that keeps blood from flowing back into the left ventricle

Aorta

#12 blood vessel that blood from the left ventricle enters after passing through a valve

Right atrium

#2 chamber in which blood from the interior vena cava drains

Tricuspid valve

#3 valve that prevents blood from backing up into the right atrium

Right ventricle

#4 heart chamber that blood enters after passing through the tricuspid valve

Pulmonary valve

#5 valve through which blood leaving the right ventricle passes on its way to the lung

Pulmonary artery

#6 blood vessel into which blood that has flowed from the right ventricle and passed through a valve

Pulmonary vein

#7 blood vessel that carries blood back to the heart and from the lungs

Left atrium

#8 heart chamber into which blood returning from the lungs enter

Mitral valve

#9 valve that prevents blood from flowing back into the left atrium