Q: Which of the following is the correct formula for calculating 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 of the following best describes the main function of albumin in blood plasma?

Accepted Answer

It prevents water from diffusing out of blood vessels.

Question 2

A patient presents with a hematocrit of 60%. Which condition is most likely indicated by this result?

Accepted Answer

Polycythemia

Question 3

Which of the following formed elements is correctly matched with its function?

Accepted Answer

Leukocytes – defense against infection

Question 4

A blood sample is centrifuged. Which layer contains the majority of white blood cells and platelets?

Accepted Answer

Buffy coat

Question 5

Which plasma protein is primarily responsible for blood clotting?

Accepted Answer

Fibrinogen

Question 6

If a patient has a total WBC count of 12,000 cells/μl, which condition might this indicate?

Accepted Answer

Leukocytosis

Question 7

Which of the following statements about erythrocytes is TRUE?

Accepted Answer

They are the most abundant formed element in blood.

Question 8

Which white blood cell type is most abundant in a normal differential count?

Accepted Answer

Neutrophils

Question 9

A patient with iron deficiency anemia would most likely have which of the following laboratory findings?

Accepted Answer

Decreased hemoglobin concentration

Question 10

Which of the following is a correct sequence for the differentiation of blood cells from stem cells?

Accepted Answer

Hemopoietic stem cell → myeloid stem cell → erythrocyte

Question 11

Which of the following white blood cells is primarily involved in allergic reactions and parasitic infections?

Accepted Answer

Eosinophils

Question 12

A patient is diagnosed with leukemia. Which of the following best describes this condition?

Accepted Answer

Cancer of white blood cells

Question 13

Which of the following is the correct formula for calculating 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 14

Which of the following is NOT a function of blood plasma?

Accepted Answer

Carrying oxygen via hemoglobin

Question 15

Which of the following best describes the role of globulins in plasma?

Accepted Answer

They include antibodies important for immune defense.

Question 16

A patient with thrombocytopenia is at increased risk for which of the following?

Accepted Answer

Excessive bleeding

Question 17

Which of the following statements about hemoglobin is correct?

Accepted Answer

Hemoglobin contains a heme pigment with an iron atom that binds oxygen.

Question 18

Which white blood cell type differentiates into macrophages in tissues?

Accepted Answer

Monocytes

Question 19

Which of the following is the correct order of abundance for white blood cells in normal blood, from most to least abundant?

Accepted Answer

Neutrophils, lymphocytes, monocytes, eosinophils, basophils

Question 20

Which of the following best explains why plasma is approximately 90% water?

Accepted Answer

Water acts as a solvent for transporting nutrients, gases, and waste products.

Blood: Components, Formed Elements, and Functions

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