Try It
Use the numbers on the heart diagram to answer the questions. Chambers of the heart are numbered using black boxes while valves of the heart are numbered using red boxes.
In the heart diagram, what number is the right atrium? / Atria are chambers at the top of the heart.
Answer: 1
In the heart diagram, what number is the left atrium? / It is a chamber so look for the black boxes.
Answer: 3
In the heart diagram, what number is the left ventricle? / Ventricles of the heart are located below the atrial chambers.
Answer: 4
In the heart diagram, what number is in the mitral valve? / Look between the left atrium and left ventricle.
Answer: 7
In the heart diagram, what number is in the right ventricle? / Ventricles are located at the bottom (or base) of the heart.
Answer: 2
In the heart diagram, what number is the tricuspid valve? / This valve lets blood move from the right atrium into the right ventricle.
Answer: 5
In the heart diagram, what number is the aortic valve? / This valve lets blood move into the aorta.
Answer: 8
In the heart diagram, what number is the pulmonary valve? / This valve lets blood move into the pulmonary artery carrying it to the lungs for oxygenation.
Answer: 6
