Q: Which of the following is the correct normal range for red blood cell count in adults?

$$4.2 \text{ million} - 6.1 \text{ million}$$ RBC/mm$$^3$$

Q: A patient with anemia due to inadequate erythropoiesis would most likely have which laboratory finding?

Decreased RBC count below $$4.2 \text{ million}$$ RBC/mm$$^3$$

Q: Which of the following formulas correctly calculates the total number of white blood cells in 1 mL of blood, given a concentration of $$8,000$$ WBC/mm$$^3$$?

$$8,000 \text{ WBC/mm}^3 \times 1,000 \text{ mm}^3 = 8,000,000 \text{ WBC/mL}$$

Question 1

Which of the following best describes the primary function of erythrocytes in human blood?

Accepted Answer

Transport oxygen ($$O_2) $$and carbon dioxide ($$CO_2) $$throughout the body

Question 2

A patient has a white blood cell count of 12,000 WBC/mm$$^3. $$Which condition does this most likely indicate?

Accepted Answer

Leukocytosis

Question 3

Which blood cell type is most abundant in a normal blood smear and is responsible for gas exchange?

Accepted Answer

Erythrocytes

Question 4

A person with blood type B has which antigens and antibodies present?

Accepted Answer

B antigens on RBCs and anti-A antibodies in plasma

Question 5

Which leukocyte is described as having a multilobed nucleus and very small cytoplasmic granules, and is most abundant among WBCs?

Accepted Answer

Neutrophil

Question 6

If a mother is Rh- and her fetus is Rh+, what is the risk if she is not treated with RhoGAM?

Accepted Answer

She may develop anti-D antibodies that can cause hemolytic disease in future Rh+ pregnancies

Question 7

Which of the following is the correct normal range for red blood cell count in adults?

Accepted Answer

$$4.2 	ext{ million} - 6.1 	ext{ million}$$ RBC/mm$$^3$$

Question 8

Which blood component is responsible for initiating clot formation at sites of vessel injury?

Accepted Answer

Platelets (thrombocytes)

Question 9

A transfusion reaction occurs when:

Accepted Answer

Donor RBC antigens react with recipient plasma antibodies, causing agglutination and hemolysis

Question 10

Which leukocyte is most involved in allergic reactions and parasitic infections?

Accepted Answer

Eosinophil

Question 11

A patient with type AB blood can safely receive blood from which donor types?

Accepted Answer

Type A, type B, type AB, and type O

Question 12

Which of the following best explains why type O blood is considered the universal donor?

Accepted Answer

Type O blood has no A or B antigens on RBCs, so it does not trigger agglutination in recipients

Question 13

Which cell type develops into macrophages in tissues and is involved in phagocytosis?

Accepted Answer

Monocyte

Question 14

Which plasma protein is most important for maintaining osmotic pressure in blood?

Accepted Answer

Albumin

Question 15

A patient with anemia due to inadequate erythropoiesis would most likely have which laboratory finding?

Accepted Answer

Decreased RBC count below $$4.2 	ext{ million}$$ RBC/mm$$^3$$

Question 16

Which of the following is TRUE regarding agglutinins in blood typing?

Accepted Answer

Agglutinins are antibodies in plasma that attack RBCs with foreign antigens

Question 17

Which of the following formulas correctly calculates the total number of white blood cells in 1 mL of blood, given a concentration of $$8,000$$ WBC/mm$$^3$$?

Accepted Answer

$$8,000 	ext{ WBC/mm}^3 	imes 1,000 	ext{ mm}^3 = 8,000,000 	ext{ WBC/mL}$$

Question 18

Which of the following scenarios would most likely result in a transfusion reaction?

Accepted Answer

Transfusing type A blood into a type B recipient

Question 19

Which leukocyte releases histamine and contains heparin, an anticoagulant?

Accepted Answer

Basophil

Question 20

A patient with polycythemia would have which of the following laboratory findings?

Accepted Answer

Increased RBC count above $$6.1 	ext{ million}$$ RBC/mm$$^3$$

Blood: Structure, Function, and Typing in Human Anatomy & Physiology

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