Blood: Functions and Components

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Questions and Answers

What stain is commonly used to histologically examine blood films?

  • Leukocyte Stain
  • Erythrocyte Stain
  • Giemsa Stain (correct)
  • Hemoglobin Stain

What is the main function of blood?

  • Regulating blood pressure
  • Transporting oxygen and nutrients to tissues (correct)
  • Producing hormones
  • Digesting food in the body

What gives unstained red blood cells their natural color?

  • Hemoglobin (correct)
  • Iron
  • Plasma
  • Calcium

Where are old red blood corpuscles trapped for hemolysis to occur?

<p>Spleen (A)</p> Signup and view all the answers

What is the average lifespan of red blood cells in adults?

<p>120 days (C)</p> Signup and view all the answers

What is the normal osmotic pressure equivalent to the normal shape of RBCs?

<p>0.9% sodium chloride (NaCl) saline solution (D)</p> Signup and view all the answers

What happens to RBCs when exposed to a hypertonic solution?

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

What is the function of the biconcave shape of RBCs?

<p>Increases surface area for efficient gas exchange (D)</p> Signup and view all the answers

What is the primary cause of polycythemia?

<p>Lack of oxygen (hypoxia) (B)</p> Signup and view all the answers

What are platelets derived from?

<p>Megakaryocytes of bone marrow (A)</p> Signup and view all the answers

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