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Anemia: Pathophysiology and Diagnosis

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Questions and Answers

In males, anemia is present if the hematocrit is below:

$35\%$ (hemoglobin less than $11.5$ g/dL)

$41\%$ (hemoglobin less than $13.5$ g/dL) (correct)

$30\%$ (hemoglobin less than $10$ g/dL)

$36\%$ (hemoglobin less than $12$ g/dL)

What is the most common cause of anemia?

Iron deficiency (correct)

Chronic kidney disease

Vitamin B12 deficiency

Folate deficiency

What is the function of red blood cells (RBCs) in the body?

Deliver oxygen from the lungs to the tissues and carbon dioxide from the tissues to the lungs (correct)

Regulate blood pressure

Produce insulin for glucose regulation

Produce antibodies for immune response

What is hemoglobin (Hb) composed of?

Heme and globin Signup and view all the answers

Anemia may result from all of the following EXCEPT:

$\text{Decreased production of platelets}$ Signup and view all the answers

What is the major regulator of platelet production?

Thrombopoietin Signup and view all the answers

What is the normal lifespan of platelets in the circulating blood?

7-10 days Signup and view all the answers

Which receptors are involved in the adhesion of platelets to subendothelial connective tissue?

$Gp Ib, Gp IIb, Gp IIIa and GP Ia$ Signup and view all the answers

What is the volume range of platelets?

$6-10 FL$ Signup and view all the answers

Which humoral agents control the production of platelets?

$Thrombopoietin and IL-2$ Signup and view all the answers