Functions of Hemoglobin in the Human Body

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Questions and Answers

What is the main function of hemoglobin?

  • Regulation of body temperature
  • Synthesis of antibodies
  • Transport of respiratory gases (correct)
  • Transport of nutrients from the intestines to the cells

What is the role of hemoglobin in blood group determination?

  • It carries antigens like A, B, and Rh factor (correct)
  • It helps in digestion
  • It produces red blood cells
  • It regulates blood pressure

What happens to senile red blood cells in the body?

  • They are destroyed in the reticuloendothelial system (correct)
  • They convert into white blood cells
  • They multiply rapidly
  • They become platelets

How does hemoglobin contribute to buffering action in blood?

<p>By functioning as a good buffer and regulating hydrogen ion concentration (A)</p> Signup and view all the answers

What is the average hemoglobin content in adult males?

<p>15 g/dL (A)</p> Signup and view all the answers

What is the function of hemoglobin in the transport of oxygen?

<p>To combine with oxygen and form oxyhemoglobin (C)</p> Signup and view all the answers

Which component of blood carries oxygen from the lungs to the rest of the body?

<p>Red blood cells (erythrocytes) (C)</p> Signup and view all the answers

What is the primary role of fibrinogen in blood?

<p>Coagulation (clotting) of blood (B)</p> Signup and view all the answers

Which component forms about 55% of the total volume of blood?

<p>Plasma (C)</p> Signup and view all the answers

What is the main function of hemoglobin in the body?

<p>Carrying oxygen to tissues and organs (B)</p> Signup and view all the answers

Which of the following is NOT a component of plasma proteins?

<p>Red blood cells (erythrocytes) (B)</p> Signup and view all the answers

What is the approximate percentage of water in plasma?

<p>~90% (D)</p> Signup and view all the answers

What is the main function of hemoglobin as mentioned in the text?

<p>Carrying oxygen from lungs to tissues (C)</p> Signup and view all the answers

Which part of hemoglobin is responsible for the buffer action in acid-base balance?

<p>Iron-containing pigment (A)</p> Signup and view all the answers

What is the structural difference between adult hemoglobin (HbA) and fetal hemoglobin (HbF)?

<p>Adult Hb has two beta chains, while fetal Hb has two gamma chains. (C)</p> Signup and view all the answers

What is the term used to describe hemoglobin after the release of oxygen?

<p>Deoxygenated Hb (C)</p> Signup and view all the answers

What is the functional difference between adult hemoglobin (HbA) and fetal hemoglobin (HbF)?

<p>Fetal Hb has more affinity for oxygen than adult Hb. (C)</p> Signup and view all the answers

Which of the following is a category of abnormal hemoglobin mentioned in the text?

<p>Hemoglobinopathies (B)</p> Signup and view all the answers

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