Understanding the Heart and Blood

What are the four main chambers of the heart?

• Right atrium, right ventricle, aorta, left atrium

• Right atrium, left ventricle, left atrium, pulmonary artery

• Left atrium, left ventricle, right ventricle, vena cava

• Right atrium, right ventricle, left atrium, left ventricle

What is the function of red blood cells?

• To transport oxygen and carbon dioxide in the body.

• To fight infections in the body.

• To produce insulin in the pancreas.

• To store nutrients for energy.

Name the type of blood cell responsible for fighting infections.

• White blood cells

• Red blood cells

• Plasma cells

• Platelets

What is the main function of arteries?

• The main function of arteries is to transport oxygenated blood from the heart to the body.

• To transport deoxygenated blood from the body to the heart.

• To absorb nutrients from the digestive system.

• To regulate body temperature through heat exchange.

How do veins differ from arteries?

• Veins are thicker than arteries and carry blood to the lungs.

• Veins differ from arteries in that they carry deoxygenated blood to the heart and have thinner walls with valves, while arteries carry oxygenated blood away from the heart and have thicker walls.

• Arteries have valves and carry deoxygenated blood to the heart.

• Veins carry oxygenated blood away from the heart and have thicker walls.

What role do capillaries play in the circulatory system?

• Capillaries enable the exchange of substances between blood and tissues.

• Capillaries store excess blood for later use.

• Capillaries are responsible for pumping blood throughout the body.

• Capillaries transport oxygen from the lungs to the heart.

What is the largest artery in the human body?

• femoral artery

• pulmonary artery

• aorta

• coronary artery

What component of blood helps in clotting?

• Plasma

• White blood cells

• Platelets

• Red blood cells

How does oxygen-rich blood differ from oxygen-poor blood?

• Oxygen-rich blood is blue and contains less carbon dioxide.

• Oxygen-poor blood has a high concentration of oxygen and is bright red.

• Oxygen-rich blood is thicker and flows slower than oxygen-poor blood.

• Oxygen-rich blood has a high concentration of oxygen and is bright red, while oxygen-poor blood has a low concentration of oxygen, is darker red, and contains more carbon dioxide.

What is the function of plasma in the blood?

• To regulate body temperature

• To fight infections

• The function of plasma in the blood is to transport nutrients, hormones, and waste products, and to maintain blood pressure and volume.

• To produce red blood cells