Pharma 121L: Cardiovascular System - Blood Contents Quiz
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Questions and Answers

What is the main genetic abnormality associated with sickle cell disease?

  • Excessive release of leukocytes
  • Mutation in clotting factor genes
  • Abnormal synthesis of hemoglobin (correct)
  • Deficiency of clotting factor VIII

How does sickled red blood cell (RBC) behavior differ from normal RBCs?

  • Sickled cells rupture easily and have a shorter lifespan (correct)
  • Sickled cells have a longer lifespan and move easily through blood vessels
  • Normal RBCs release excessive potassium
  • Normal RBCs clump together and block blood flow

How do sickled cells contribute to organ damage in sickle cell disease?

  • They release excess hemoglobin, damaging the kidneys
  • They clump together, blocking blood flow and causing oxygen deprivation (correct)
  • They have an abnormal synthesis of white blood cells
  • They move too quickly through blood vessels, causing frictional damage

Why do individuals with sickle cell disease often experience severe pain crises?

<p>Due to the blockage of blood vessels by sickled cells (D)</p> Signup and view all the answers

Which condition results in a deficiency of clotting factor VIII?

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

How does the gene responsible for sickling help in resisting malaria?

<p>It allows potassium leakage which kills malaria parasites (B)</p> Signup and view all the answers

What is the typical lifespan of sickled red blood cells?

<p>~10-20 days (B)</p> Signup and view all the answers

What is the main pathophysiological feature of sickle cell disease?

<p>Clumping and blocking of blood vessels (D)</p> Signup and view all the answers

What is the genetic abnormality associated with sickle cell disease?

<p>Abnormal type of Hemoglobin (Hb-S) (A)</p> Signup and view all the answers

How do sickled red blood cells contribute to severe anemia in sickle cell disease?

<p>They rupture prematurely releasing damaging Hgb (D)</p> Signup and view all the answers

What is the mechanism by which the gene responsible for sickling helps in resisting malaria?

<p>Low levels of potassium inside cells (B)</p> Signup and view all the answers

Which process results in the deprivation of organs with oxygen in sickle cell disease?

<p>Clumping and blocking of blood vessels (A)</p> Signup and view all the answers

What is the main feature that distinguishes sickled red blood cell behavior from normal RBCs?

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

Which factor is deficient in Hemophilia A (Classic Hemophilia)?

<p>Clotting factor VIII (C)</p> Signup and view all the answers

How do sickled red blood cells differ from normal RBCs in terms of movement through blood vessels?

<p>They do not move easily through blood vessels (C)</p> Signup and view all the answers

Which gene defect leads to the resistance to malaria seen in individuals with sickle cell disease?

<p>&quot;Sickling gene&quot; defect (D)</p> Signup and view all the answers

"Christmas Disease" is associated with a deficiency in which clotting factor?

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

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