Circulatory System Quiz

What waste product does blood carry to the lungs?

• Carbon dioxide

• Urea

• Ammonia

• Lactic acid

What is the normal hemoglobin range for infants?

• 9–14 g/dL

• 17–23 g/dL

• 10–15 g/dL

• 12–16 g/dL

What do arteries do?

• Carry blood away from the heart

• Carry blood towards the heart

• Exchange gases in the lungs

• Filter blood in the kidneys

What percentage of circulating lymphocytes are T cells?

• 10% to 20%

• 30% to 50%

• 65% to 80%

• 90% to 100%

What type of immunity do B cells provide?

• Cell-mediated immunity

• Humoral immunity

• Innate immunity

• Passive immunity

What do leukocytes do to larger antigens?

• Ingest them through phagocytosis

• Neutralize them directly

• Stimulate them

• Suppress them

What do T cells account for in the body?

• Majority of the circulating lymphocytes

• Minority of the circulating lymphocytes

• All of the circulating lymphocytes

• None of the circulating lymphocytes

What type of antigens do antibodies neutralize?

• Only large antigens

• Only small antigens

• Both large and small antigens

• Only bacterial antigens

What shape does the nucleus of an immature RBC form as it matures?

• Spherical

• Oval or biconcave disk

• Cuboidal

• Triangular

What happens to the leftover portion of hemoglobin after erythrocytes break down?

• It becomes bile

• It forms new RBCs

• It turns into glucose

• It is exhaled as carbon dioxide