Understanding the Heart: Anatomy, Function, and Flow

What is the primary function of the heart?

• To filter blood

• To produce blood cells

• To pump blood throughout the body

• To absorb nutrients

Which chamber of the heart receives deoxygenated blood from the body?

• Right atrium

• Right ventricle

• Left atrium

• Left ventricle

Through which valve does blood flow from the right atrium to the right ventricle?

• Aortic valve

• Mitral valve

• Tricuspid valve

• Pulmonary valve

What is the function of the mitral valve?

• It controls blood flow from the left ventricle to the aorta.

• It controls blood flow from the right ventricle to the pulmonary artery.

• It controls blood flow from the left atrium to the left ventricle.

• It controls blood flow from the right atrium to the right ventricle.

Which of the following is NOT a function of the heart valves?

• Preventing backflow of blood

• Regulating blood pressure

• Ensuring unidirectional blood flow

• Oxygenating blood

The left ventricle pumps oxygenated blood into which vessel?

• Pulmonary artery

• Aorta

• Pulmonary vein

• Superior vena cava

What is the correct sequence of blood flow through the heart starting from the right atrium?

• Right atrium → Tricuspid valve → Right ventricle → Pulmonary valve → Pulmonary artery

• Right atrium → Mitral valve → Left ventricle → Aortic valve → Aorta

• Left atrium → Mitral valve → Left ventricle → Aortic valve → Aorta

• Left atrium → Tricuspid valve → Right ventricle → Pulmonary valve → Pulmonary artery

Which part of the heart is responsible for initiating the heartbeat?

• Atrioventricular node

• Sinoatrial node

• Bundle of His

• Purkinje fibers

Blood returning to the heart from the lungs enters which chamber?

• Right atrium

• Right ventricle

• Left atrium

• Left ventricle

Which of the following vessels carries deoxygenated blood?

• Pulmonary veins

• Aorta

• Pulmonary artery

• Coronary arteries