Q: Which of the following equations correctly represents the oxygen-carrying capacity of hemoglobin in red blood cells?

$$1 \text{ Hb molecule} = 4 \text{ O}_2 \text{ molecules}$$

Question 1

Which of the following is NOT a function of blood?

Accepted Answer

Producing hormones for the endocrine system

Question 2

A patient presents with fatigue, pallor, and shortness of breath. Laboratory results show a low hematocrit and microcytic, hypochromic red blood cells. Which of the following is the most likely diagnosis?

Accepted Answer

Iron-deficiency anemia

Question 3

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

Accepted Answer

Albumin

Question 4

A person with type AB blood can safely receive red blood cells from which of the following blood types?

Accepted Answer

Types A, B, AB, and O

Question 5

Which of the following best explains why red blood cells are efficient at transporting oxygen?

Accepted Answer

They are biconcave, lack mitochondria, and are filled with hemoglobin

Question 6

A patient with chronic kidney disease develops anemia. Which hormone deficiency is most likely responsible?

Accepted Answer

Erythropoietin

Question 7

During hemostasis, which step involves the conversion of fibrinogen to fibrin?

Accepted Answer

Coagulation

Question 8

A patient with a deficiency in intrinsic factor is most likely to develop which type of anemia?

Accepted Answer

Pernicious anemia

Question 9

Which of the following best describes the role of erythropoietin (EPO) in erythropoiesis?

Accepted Answer

EPO stimulates the formation of red blood cells in response to hypoxia

Question 10

A patient with sickle-cell anemia is less likely to contract malaria. What is the most likely explanation for this phenomenon?

Accepted Answer

The malaria parasite cannot survive well in sickled red blood cells

Question 11

Which of the following equations correctly represents the oxygen-carrying capacity of hemoglobin in red blood cells?

Accepted Answer

$$1 	ext{ Hb molecule} = 4 	ext{ O}_2 	ext{ molecules}$$

Question 12

A patient is found to have a hematocrit of 60%. Which of the following conditions is most consistent with this finding?

Accepted Answer

Polycythemia

Question 13

Which of the following best describes the process of clot retraction?

Accepted Answer

Actin and myosin in platelets contract, pulling fibrin strands and drawing wound edges together

Question 14

A patient receives a transfusion of mismatched blood. Which of the following is the most immediate risk?

Accepted Answer

Agglutination and hemolysis of donor red blood cells

Question 15

Which of the following is a correct sequence of events in the intrinsic pathway of coagulation?

Accepted Answer

Activation of factor XII $$\rightarrow$$ activation of factor X $$\rightarrow$$ formation of prothrombin activator

Question 16

Which of the following best explains why vitamin K deficiency can lead to bleeding disorders?

Accepted Answer

Vitamin K is required for the synthesis of several clotting factors

Question 17

A patient with a white blood cell count of 20,000/\mu L (normal: 4,000–11,000/\mu L) and a high percentage of immature cells is most likely suffering from which condition?

Accepted Answer

Leukemia

Question 18

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

Accepted Answer

They form a temporary plug by adhering to exposed collagen fibers

Question 19

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

Accepted Answer

Factor VIII

Question 20

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

Accepted Answer

Type O blood contains no A or B antigens on the red blood cells

Blood: Structure, Function, and Disorders (Anatomy & Physiology Chapter 17 Study Notes)

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