Q: Which of the following equations correctly calculates hematocrit ($$Hct) $$given the volume of red blood cells ($$V_{RBC}) $$and total blood volume ($$V_{total}$$)?

$$Hct = \frac{V_{RBC}}{V_{total}} \times 100$$

Question 1

Which plasma protein is primarily responsible for maintaining the colloid osmotic pressure of blood?

Accepted Answer

Albumin

Question 2

A patient presents with jaundice. Which of the following is the most likely physiological cause?

Accepted Answer

Elevated levels of bilirubin due to impaired excretion

Question 3

Which of the following best describes the function of platelets in hemostasis?

Accepted Answer

They adhere to collagen in damaged vessels and release factors that promote vasoconstriction and aggregation

Question 4

Which white blood cell type is most associated with allergic reactions and defense against parasites?

Accepted Answer

Eosinophils

Question 5

A patient’s complete blood count (CBC) shows a hematocrit of 60%. What does this value represent?

Accepted Answer

The ratio of red blood cells to total blood volume, expressed as a percentage

Question 6

Which of the following equations correctly calculates hematocrit ($$Hct) $$given the volume of red blood cells ($$V_{RBC}) $$and total blood volume ($$V_{total}$$)?

Accepted Answer

$$Hct = \frac{V_{RBC}}{V_{total}} 	imes 100$$

Question 7

Which of the following is the correct sequence of events in the coagulation cascade?

Accepted Answer

Vasoconstriction, platelet plug formation, coagulation

Question 8

A patient with hereditary spherocytosis is most likely to experience which of the following?

Accepted Answer

Hemolytic anemia due to abnormal red blood cell morphology

Question 9

Which of the following statements about red blood cells (RBCs) is correct?

Accepted Answer

RBCs live for about 120 days and lack a nucleus when mature

Question 10

Which protein is responsible for transporting iron in the blood to the bone marrow for hemoglobin synthesis?

Accepted Answer

Transferrin

Question 11

A patient with iron-deficiency anemia is likely to have which type of red blood cell morphology?

Accepted Answer

Microcytes

Question 12

Which of the following is a function of fibrinogen in plasma?

Accepted Answer

Forming threads essential to blood clotting

Question 13

Which cytokine regulates the production of platelets?

Accepted Answer

Thrombopoietin

Question 14

Which of the following best explains why mature red blood cells cannot repair themselves?

Accepted Answer

They lack a nucleus and organelles necessary for protein synthesis

Question 15

Which of the following is the correct formula for calculating the mean red cell volume (MCV) given hematocrit ($$Hct) $$and red blood cell count ($$RBC$$)?

Accepted Answer

$$MCV = \frac{Hct}{RBC}$$

Question 16

Which of the following endogenous anticoagulants acts by inhibiting thrombin?

Accepted Answer

Heparin

Question 17

A patient with hemophilia is most likely to have a defect in which physiological process?

Accepted Answer

Coagulation cascade due to a missing or defective clotting factor

Question 18

Which of the following best describes the fate of remnants of heme groups after red blood cell destruction?

Accepted Answer

They are converted to bilirubin and excreted as bile

Question 19

Which pathway in the coagulation cascade is activated by exposure to collagen in a damaged blood vessel?

Accepted Answer

Intrinsic pathway (contact activation pathway)

Question 20

Which of the following best explains the role of plasmin in hemostasis?

Accepted Answer

It breaks down fibrin fibers, leading to clot dissolution

Blood: Structure, Function, and Hemostasis

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