Q: Which of the following equations correctly calculates hematocrit ($$Hct) $$given the volume of packed 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 primary function of erythrocytes in human blood?

Accepted Answer

Carrying oxygen from the lungs to tissues and facilitating carbon dioxide removal

Question 2

A patient’s hematocrit is measured at 60%. Which of the following is the most likely clinical implication?

Accepted Answer

The patient may be dehydrated or have polycythemia

Question 3

Which blood component is primarily responsible for clot formation after injury?

Accepted Answer

Thrombocytes (platelets)

Question 4

A newborn is diagnosed with erythroblastosis fetalis. Which maternal-fetal blood type combination most commonly leads to this condition?

Accepted Answer

Mother is Rh-negative, fetus is Rh-positive

Question 5

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

Accepted Answer

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

Question 6

A patient with type AB blood needs a transfusion. Which blood type(s) can safely donate to this patient?

Accepted Answer

Type A, B, AB, and O

Question 7

Which of the following is a key difference between blood typing and blood crossmatching?

Accepted Answer

Blood typing determines ABO and Rh status, while crossmatching tests for compatibility between donor and recipient blood

Question 8

Which of the following symptoms is most commonly associated with anemia?

Accepted Answer

Fatigue and pallor

Question 9

A patient presents with frequent infections, easy bruising, and unexplained weight loss. Which blood disorder is most likely?

Accepted Answer

Leukemia

Question 10

Which of the following statements about universal blood donors and recipients is correct?

Accepted Answer

Type O is the universal donor and type AB is the universal recipient

Question 11

Which leukocyte is primarily responsible for fighting bacterial infections?

Accepted Answer

Neutrophils

Question 12

A blood sample contains 45% erythrocytes, 1% leukocytes and platelets, and 54% plasma. What is the hematocrit value?

Accepted Answer

$$45\%$$

Question 13

Which of the following best explains why Rh incompatibility can cause hemolytic disease of the newborn?

Accepted Answer

Maternal antibodies attack fetal Rh-positive red blood cells

Question 14

Which of the following is NOT a function of blood?

Accepted Answer

Production of hormones

Question 15

A patient with leukemia is most likely to have which abnormality in their blood cell counts?

Accepted Answer

Increased abnormal leukocyte count

Question 16

Which of the following best describes the process of hemostasis?

Accepted Answer

The formation of a blood clot to stop bleeding

Question 17

A patient with type O negative blood requires a transfusion. Which donor blood type is safest?

Accepted Answer

Type O negative

Question 18

Which of the following is a sign commonly seen in patients with severe anemia?

Accepted Answer

Shortness of breath on exertion

Question 19

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

Accepted Answer

Albumin

Question 20

A patient receives a blood transfusion and develops fever, chills, and back pain. Which of the following is the most likely cause?

Accepted Answer

Hemolytic transfusion reaction due to ABO incompatibility

Blood: Structure, Function, and Clinical Relevance

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