Q: Which of the following equations correctly represents the oxygen-carrying capacity of hemoglobin in a single erythrocyte?

$$4 \text{ O}_2 \text{ molecules per Hb} \times 250,000,000 \text{ Hb molecules per RBC}$$

Question 1

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

Accepted Answer

Transporting oxygen to body tissues

Question 2

A patient presents with fatigue, pallor, and shortness of breath. Laboratory results show a hematocrit of 30%. Which condition is most likely present?

Accepted Answer

Anemia

Question 3

Which plasma protein is most abundant and plays a major role in maintaining osmotic pressure?

Accepted Answer

Albumin

Question 4

A person with type B blood can safely receive which of the following blood types in a transfusion?

Accepted Answer

Type O

Question 5

Which of the following is a correct sequence of events in hemostasis?

Accepted Answer

Vascular spasm, platelet plug formation, coagulation

Question 6

Which hormone is released by the kidneys in response to hypoxia and stimulates red blood cell production?

Accepted Answer

Erythropoietin

Question 7

A patient with a deficiency in vitamin K would most likely experience which of the following?

Accepted Answer

Impaired synthesis of clotting factors

Question 8

Which of the following best explains why mature erythrocytes lack mitochondria?

Accepted Answer

To prevent the use of oxygen they transport

Question 9

A patient with sickle-cell anemia is likely to experience which of the following complications during hypoxic conditions?

Accepted Answer

RBCs becoming sickle-shaped and blocking capillaries

Question 10

Which of the following equations correctly represents the oxygen-carrying capacity of hemoglobin in a single erythrocyte?

Accepted Answer

$$4 	ext{ O}_2 	ext{ molecules per Hb} 	imes 250,000,000 	ext{ Hb molecules per RBC}$$

Question 11

Which of the following best describes the fate of the heme group from hemoglobin after erythrocyte destruction?

Accepted Answer

It is degraded to bilirubin and excreted in bile

Question 12

Which white blood cell type is most numerous and is primarily responsible for phagocytizing bacteria?

Accepted Answer

Neutrophils

Question 13

A patient with a platelet count of 40,000/mm$$^3 is at $$risk for which condition?

Accepted Answer

Thrombocytopenia

Question 14

Which of the following best explains why aspirin is used to prevent thromboembolic conditions?

Accepted Answer

It inhibits thromboxane A2, reducing platelet aggregation

Question 15

Which of the following is a possible consequence of a mismatched blood transfusion?

Accepted Answer

Agglutination and hemolysis of donor RBCs

Question 16

Which of the following best describes the role of plasmin in the body?

Accepted Answer

Digests fibrin and dissolves clots

Question 17

A patient with chronic liver disease is likely to have which of the following complications related to blood?

Accepted Answer

Impaired coagulation and increased bleeding risk

Question 18

Which of the following best explains why individuals with sickle-cell anemia are more resistant to malaria?

Accepted Answer

The altered shape of RBCs impairs the malaria parasite's life cycle

Question 19

Which of the following is the correct formula for calculating hematocrit?

Accepted Answer

$$	ext{Hematocrit} = \frac{	ext{Volume of RBCs}}{	ext{Total Blood Volume}} 	imes 100$$

Question 20

A patient with hemophilia A is deficient in which clotting factor?

Accepted Answer

Factor VIII

Comprehensive Study Notes: Blood (Chapter 17) – Structure, Function, and Disorders

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