Understanding the Heart

What is the primary function of the interatrial and interventricular septum in the heart?

• To generate electrical signals for the heartbeat

• To supply oxygen to the heart muscle

• To pump blood into the ventricles

• To prevent mixing of blood between the left and right sides

Which valve opens into the right ventricle?

• Mitral valve

• Aortic valve

• Pulmonary valve

• Tricuspid valve

What role do the chordae tendineae play in the heart?

• They separate the left and right sides of the heart

• They supply blood to the heart muscle

• They generate electrical signals

• They hold the heart valves in place during contractions

How does deoxygenated blood enter the right atrium?

• Through the superior and inferior vena cava

• Through the coronary arteries

• Through the pulmonary veins

• Through the aorta

What is the average number of heartbeats per minute?

• 30 to 50 beats

• 60 to 100 beats

• 110 to 130 beats

• 140 to 160 beats