Understanding the Circulatory System

What is the main function of the heart?

• To produce hormones for digestion.

• The main function of the heart is to pump blood.

• To regulate body temperature.

• To filter toxins from the blood.

How many chambers does the heart have?

• 4

• 5

• 3

• 2

What is the role of the left ventricle?

• The left ventricle pumps oxygenated blood to the body.

• The left ventricle pumps blood to the lungs for oxygenation.

• The left ventricle receives deoxygenated blood from the body.

• The left ventricle regulates blood pressure in the heart.

Which blood vessel carries oxygenated blood away from the heart?

• Pulmonary artery

• Vein

• Aorta

• Capillary

What is the function of arteries in the circulatory system?

• The function of arteries is to carry oxygenated blood away from the heart.

• To carry deoxygenated blood to the heart.

• To filter blood and remove toxins.

• To transport nutrients to the lungs.

How do veins differ from arteries?

• 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.

• Veins carry oxygenated blood away from the heart.

• Arteries have valves to prevent backflow of blood.

• Veins have thicker walls than arteries.

What is the primary function of capillaries?

• Regulating blood pressure and flow.

• Facilitating exchange of substances between blood and tissues.

• Storing nutrients and waste products.

• Transporting oxygen throughout the body.

What are the three main types of blood cells?

• Platelets, plasma, leukocytes

• Red blood cells, white blood cells, platelets

• White blood cells, serum, erythrocytes

• Red blood cells, plasma, lymphocytes

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

• Red blood cells produce hormones in the body.

• Red blood cells are responsible for digestion.

• Red blood cells transport oxygen and carbon dioxide in the body.

• Red blood cells help in the formation of bones.

How do white blood cells contribute to the immune system?

• White blood cells mainly function in the digestive system.

• White blood cells primarily transport oxygen throughout the body.

• White blood cells are responsible for producing hormones.

• White blood cells contribute to the immune system by identifying, attacking, and eliminating pathogens, and coordinating the immune response.