Cardiovascular System Quiz

What is the primary function of the heart?

• To filter blood

• To pump blood throughout the body

• To produce hormones

• To store nutrients

Which part of the heart is responsible for receiving deoxygenated blood?

• Left atrium

• Right ventricle

• Right atrium

• Left ventricle

What is the normal heart rate range for adults?

• 60-100 beats per minute

• 100-120 beats per minute

• 120-140 beats per minute

• 40-60 beats per minute

What is the role of the mitral valve?

• Controls blood flow to the lungs

• Separates the left atrium and left ventricle

• Prevents backflow into the aorta

• Separates the right atrium and right ventricle

What does cardiac output measure?

• The heart's electrical activity

• The volume of blood in the body

• The pressure in the arteries

• The amount of blood the heart pumps per minute

Which artery supplies blood to the heart muscle?

• Carotid artery

• Pulmonary artery

• Coronary artery

• Aorta

What is preload in the context of cardiac function?

• The volume of blood in the ventricles at the end of diastole

• The pressure in the arteries during contraction

• The rate at which the heart beats

• The resistance the heart must overcome to eject blood

What is the function of the pericardial fluid?

• To regulate heart rate

• To provide nutrients to the heart

• To lubricate the heart and reduce friction

• To store excess blood

What is the significance of the SA node?

• It regulates blood pressure

• It is the main pumping chamber of the heart

• It generates electrical impulses that initiate heartbeats

• It prevents backflow of blood

What does the term 'systole' refer to?

• The relaxation phase of the heart

• The contraction phase of the heart

• The filling phase of the heart

• The resting phase of the heart