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