What are the four chambers of the human heart called?

• Atria, Ventricles, Septum, Valves

• Atria, Ventricles, Arteries, Veins

• Atria, Ventricles, Aorta, Pulmonary Artery

• Left Atrium, Right Atrium, Left Ventricle, Right Ventricle

• Left Atrium, Right Atrium, Left Ventricle, Pulmonary Artery

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

• Left Atrium

• Right Atrium

• Left Ventricle

• Right Ventricle

• Pulmonary Vein

What is the name of the valve located between the left atrium and the left ventricle?

• Tricuspid Valve

• Pulmonary Valve

• Mitral Valve

• Aortic Valve

• Semilunar Valve

Which blood vessels carry oxygenated blood from the lungs to the heart?

• Pulmonary Arteries

• Pulmonary Veins

• Coronary Arteries

• Superior Vena Cava

• Inferior Vena Cava

What is the function of the sinoatrial (SA) node in the heart?

• To pump blood to the lungs

• To regulate blood pressure

• To act as the heart's natural pacemaker

• To control the opening and closing of heart valves

• To initiate the contraction of the ventricles

During which phase of the cardiac cycle does the heart muscle contract and pump blood out of the chambers?

• Diastole

• Systole

• Atrial Contraction

• Ventricular Filling

• Isovolumetric Relaxation

What is the name of the blood vessel that carries oxygenated blood from the heart to the rest of the body?

• Pulmonary Artery

• Aorta

• Superior Vena Cava

• Inferior Vena Cava

• Coronary Artery

Which part of the heart is responsible for pumping blood to the lungs for oxygenation?

• Left Atrium

• Left Ventricle

• Right Ventricle

• Right Atrium

• Pulmonary Vein

What is the role of the atrioventricular (AV) node in the cardiac cycle?

• To pump blood to the body

• To delay the electrical signal before it passes to the ventricles

• To act as the heart's natural pacemaker

• To control the opening and closing of heart valves

• To synchronize the contraction of the atria

What is the term for the relaxation phase of the cardiac cycle when the heart chambers fill with blood?

• Diastole

• Systole

• Atrial Contraction

• Ventricular Ejection

• Isovolumetric Contraction