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

$250,000,000 \ \text{Hb molecules} \times 4 \ \text{O}_2/\text{Hb} = 1,000,000,000 \ \text{O}_2$

Q: Which of the following is the correct sequence of events in the common pathway of coagulation?

$\text{Prothrombin activator} \rightarrow \text{Thrombin} \rightarrow \text{Fibrin}$

Question 1

Which of the following best describes the three primary functions of blood in the human body?

Accepted Answer

Transport, regulation, and protection

Question 2

A patient is found to have a hematocrit of 60%. Which of the following is the most likely explanation for this finding?

Accepted Answer

Polycythemia vera

Question 3

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

Accepted Answer

Albumin

Question 4

A person with blood type O negative ($O^-$) can safely receive which of the following blood types in an emergency transfusion?

Accepted Answer

O negative ($O^-$)

Question 5

Which of the following best explains why erythrocytes (red blood cells) are biconcave in shape?

Accepted Answer

To increase surface area for gas exchange

Question 6

A patient presents with fatigue and pallor. Laboratory tests reveal microcytic, hypochromic red blood cells. Which of the following is the most likely diagnosis?

Accepted Answer

Iron deficiency anemia

Question 7

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

Accepted Answer

$250,000,000 \ 	ext{Hb molecules} 	imes 4 \ 	ext{O}_2/	ext{Hb} = 1,000,000,000 \ 	ext{O}_2$

Question 8

Which hormone is primarily responsible for stimulating erythropoiesis, and where is it produced?

Accepted Answer

Erythropoietin, produced by the kidneys

Question 9

A patient with a deficiency in vitamin B$_{12}$ absorption due to lack of intrinsic factor is most likely to develop which type of anemia?

Accepted Answer

Pernicious anemia

Question 10

Which of the following best describes the process of hemostasis?

Accepted Answer

Vascular spasm, platelet plug formation, and coagulation

Question 11

A patient is diagnosed with hemophilia A. Which clotting factor is deficient in this disorder?

Accepted Answer

Factor VIII

Question 12

Which of the following white blood cells is most abundant in normal blood and is primarily responsible for phagocytosis of bacteria?

Accepted Answer

Neutrophils

Question 13

A patient with a high eosinophil count is most likely suffering from which of the following conditions?

Accepted Answer

Parasitic infection

Question 14

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

Accepted Answer

To prevent consumption of the oxygen they transport

Question 15

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 16

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

Accepted Answer

$	ext{Prothrombin activator} ightarrow 	ext{Thrombin} ightarrow 	ext{Fibrin}$

Question 17

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

Accepted Answer

They form a temporary plug by adhering to exposed collagen at the injury site

Question 18

A patient with a deficiency of antithrombin III is at increased risk for which of the following?

Accepted Answer

Abnormal clot formation (thromboembolism)

Question 19

Which of the following best explains why a deficiency in vitamin K can lead to excessive bleeding?

Accepted Answer

Vitamin K is required for the synthesis of several clotting factors

Question 20

A patient with chronic kidney disease develops anemia. Which of the following best explains this finding?

Accepted Answer

Decreased erythropoietin production by the kidneys

Chapter 17: The Cardiovascular System – Blood (Anatomy & Physiology Study Notes)

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