A patient has a haemoglobin level of 7 g/dL and reports fatigue and shortness of breath on exertion. Which function of haemoglobin is most directly reduced?
Correct answer: A. Transport of oxygen
- A. Transport of oxygen
- B. Production of antibodies
- C. Formation of platelets
- D. Destruction of bacteria
Explanation
Haemoglobin binds and transports oxygen in red blood cells, so a low level can reduce tissue oxygen delivery and cause fatigue or breathlessness. Antibodies are produced by B lymphocytes, and platelets are formed from megakaryocytes.
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About Blood and Immunity
Blood and immunity covers plasma, red blood cells, white blood cells, platelets, haemoglobin, blood groups and haemostasis. It explains innate and adaptive defenses, antibodies, lymphocytes, inflammation, vaccination and immune memory, with a distinction between active and passive immunity and between antigen and antibody.
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