What is the heart?

What does the heart do?

Why is blood needed in the body?

What is the natural resting heart rate?

What type of circulatory system is within the human heart?

Why is the human heart part of a double circulatory system?

What does pulmonary mean?

What does hepatic mean?

What does renal mean?

What do the lungs do to blood?

Where does gas exchange from blood take place?

What is A?

What is B?

What is C?

What is D?

What is E?

What is F?

What is G?

What is H?

What are the two chambers of each side of the heart?

What does the right hand side of the heart do?

What does the left hand side of the heart do?

What type of blood is in the right side of the heart?

What type of blood is in the left side of the heart?

What happens in the right atrium?

What happens in the left atrium?

What happens in the right ventricle?

What happens in the left ventricle?

Why is the muscle of the left hand side of the heart thicker?

Where is the tricuspid valve?

Where is the bicupsid valve?

Where are the semilunar valves?

What do the tricuspid and bicuspid valves do?

What do semilunar valves do?

Where is the sinoatrial node found?

What is used if your sinoatrial node does not work properly?

What are artificial pacemakers?

What is natural resting heart rate controlled by (pacemaker)?