What is the primary function of the heart?

• To circulate oxygen in the lungs.

• To filter waste from the blood.

• To pump blood throughout the body.

• To digest food in the stomach.

Name the four main chambers of the heart.

• Right atrium, Right atrium, Left ventricle, Left ventricle

• Upper chamber, Lower chamber, Left chamber, Right chamber

• Aorta, Pulmonary artery, Left atrium, Right ventricle

• Right atrium, Right ventricle, Left atrium, Left ventricle

What separates the left and right atria?

• Aortic valve

• Interatrial septum

• Coronary sinus

• Pulmonary vein

What is the role of the right ventricle?

• The right ventricle receives oxygenated blood from the lungs.

• The right ventricle pumps oxygenated blood to the body.

• The right ventricle stores blood before it enters the left ventricle.

• The right ventricle pumps deoxygenated blood to the lungs.

How many valves are present in the human heart?

• 5

• 2

• 4

• 3

What is the function of the atrioventricular valves?

• To regulate blood pressure in the arteries.

• To allow blood flow from the atria to the ventricles.

• To prevent backflow of blood from the ventricles to the atria.

• To facilitate oxygen exchange in the lungs.

Which valve prevents backflow into the left atrium?

• Aortic valve

• Mitral valve

• Pulmonary valve

• Tricuspid valve

Which chamber of the heart receives oxygenated blood from the lungs?

• Right ventricle

• Left atrium

• Left ventricle

• Right atrium

Describe the pathway of blood flow through the heart.

• body -> left atrium -> left ventricle -> lungs -> right atrium -> right ventricle -> body

• body -> left ventricle -> lungs -> right atrium -> right ventricle -> body

• body -> right ventricle -> right atrium -> left atrium -> lungs -> left ventricle -> body

• The pathway of blood flow through the heart is: body -> right atrium -> right ventricle -> lungs -> left atrium -> left ventricle -> body.

What is the significance of the septum in the heart?

• The septum prevents the mixing of oxygenated and deoxygenated blood in the heart.

• The septum is responsible for pumping blood out of the heart.

• The septum allows blood to flow freely between the chambers.

• The septum regulates heart rate and rhythm.