Heart and Blood

What is the main function of the heart?

• Pumping oxygenated blood

• Digesting food

• Producing red blood cells

• Filtering waste products

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

• left atrium

• right atrium

• left ventricle

• right ventricle

What is the purpose of valves in the heart?

• To control the heart rate.

• To regulate blood pressure.

• To filter impurities from the blood.

• To ensure one-way blood flow and prevent backflow of blood.

What is the average resting heart rate for a healthy adult?

• 40-60 beats per minute

• 60-100 beats per minute

• 100-140 beats per minute

• 80-120 beats per minute

What is the role of red blood cells in the body?

• Regulating body temperature.

• Filtering waste products.

• Producing antibodies.

• Transporting oxygen and carbon dioxide

What is the function of arteries in the circulatory system?

• Arteries carry oxygenated blood away from the heart.

• Arteries carry blood towards the heart.

• Arteries carry deoxygenated blood away from the heart.

• Arteries carry waste products away from the heart.

What is the purpose of capillaries in the body?

• To regulate body temperature.

• To transport hormones throughout the body.

• To store excess nutrients in the body.

• To facilitate the exchange of oxygen, nutrients, and waste products between the blood and the surrounding tissues.

What is the pathway of blood through the heart?

• Right atrium, tricuspid valve, left ventricle, pulmonary valve, pulmonary artery, lungs, pulmonary veins, left atrium, mitral valve, right ventricle, aortic valve, aorta.

• Right atrium, mitral valve, right ventricle, pulmonary valve, pulmonary artery, lungs, pulmonary veins, left atrium, tricuspid valve, left ventricle, aortic valve, aorta.

• Left atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary artery, lungs, pulmonary veins, right atrium, mitral valve, left ventricle, aortic valve, aorta.

• Right atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary artery, lungs, pulmonary veins, left atrium, mitral valve, left ventricle, aortic valve, aorta

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

• Producing red blood cells.

• Filtering waste products.

• Initiating electrical impulses

• Regulating blood flow.

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

• Pumping blood from the ventricles to the atria.

• Regulating heart rate.

• Generating electrical signals in the atria.

• Transmitting electrical signals from the atria to the ventricles