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

$$4 \times 1 = 4$$ oxygen molecules per hemoglobin$

Question 1

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

Accepted Answer

To transport oxygen from the lungs to tissues and carbon dioxide from tissues to the lungs

Question 2

A patient presents with fatigue and pallor. Laboratory results show a low hematocrit and microcytic, hypochromic red blood cells. Which type of anemia is most likely?

Accepted Answer

Iron-deficiency anemia

Question 3

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

Accepted Answer

$$4 	imes 1 = 4$$ oxygen molecules per hemoglobin$

Question 4

Which process is responsible for the formation of all blood cells in the body, and where does it primarily occur in adults?

Accepted Answer

Hematopoiesis in red bone marrow

Question 5

A person with type AB blood is considered a universal recipient because:

Accepted Answer

Their plasma contains no antibodies against A or B antigens

Question 6

Which of the following best explains why vascular spasms are the first step in hemostasis?

Accepted Answer

They immediately reduce blood loss by constricting the damaged vessel

Question 7

A newborn develops hemolytic disease due to Rh incompatibility. Which scenario is most likely responsible?

Accepted Answer

Rh- mother and Rh+ infant during second pregnancy

Question 8

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

Accepted Answer

Fibrinogen is converted to fibrin by thrombin

Question 9

Which of the following best describes the role of erythropoietin in erythropoiesis?

Accepted Answer

It is released by the kidneys in response to hypoxia and stimulates red blood cell production in the bone marrow

Question 10

A patient with leukemia is likely to have which of the following laboratory findings?

Accepted Answer

Increased number of abnormal white blood cells

Question 11

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

Accepted Answer

Albumin

Question 12

Which white blood cell type is primarily responsible for combating parasitic worm infections?

Accepted Answer

Eosinophils

Question 13

A blood smear shows numerous sickle-shaped erythrocytes. Which genetic condition is most likely present?

Accepted Answer

Sickle cell disease

Question 14

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 the erythrocyte surface

Question 15

Which of the following is a function of platelets?

Accepted Answer

Initiating the formation of a platelet plug during hemostasis

Question 16

Which pathway in the clotting cascade is activated by tissue factor released from damaged cells outside the blood vessel?

Accepted Answer

Extrinsic pathway

Question 17

Which of the following best describes the fate of iron after erythrocyte destruction?

Accepted Answer

It is recycled and transported by transferrin to the bone marrow

Question 18

Which of the following is a correct description of the structure of an antibody?

Accepted Answer

It is a Y-shaped molecule with two heavy and two light polypeptide chains

Question 19

Which of the following best explains why leukopenia increases the risk of infection?

Accepted Answer

There are fewer white blood cells to combat pathogens

Question 20

A patient receives a bone marrow transplant to treat leukemia. What is the primary purpose of this procedure?

Accepted Answer

To replace diseased or cancerous hematopoietic stem cells with healthy ones

Blood: Structure, Function, and Clinical Relevance (Chapter 19 Study Notes)

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