$$ \text{Prothrombin} + \text{Prothrombin Activator} \rightarrow \text{Thrombin} $$

Question 1

Which of the following statements best describes the structural difference between granulocytes and agranulocytes?

Accepted Answer

Granulocytes have visible cytoplasmic granules, while agranulocytes do not.

Question 2

A patient presents with a high percentage of eosinophils in their blood. Which condition is most likely associated with this finding?

Accepted Answer

Parasitic worm infection

Question 3

Which leukocyte is most abundant in normal blood and is known as a 'bacteria slayer' due to its phagocytic activity?

Accepted Answer

Neutrophil

Question 4

A blood smear shows large, purplish-black granules and a nucleus with one to two constrictions. Which leukocyte is being observed?

Accepted Answer

Basophil

Question 5

Which cell type gives rise to plasma cells that produce antibodies?

Accepted Answer

B lymphocyte

Question 6

What is the correct sequence of events in hemostasis?

Accepted Answer

Vascular spasm, platelet plug formation, coagulation

Question 7

During coagulation, which enzyme converts fibrinogen to fibrin?

Accepted Answer

Thrombin

Question 8

A patient with a deficiency in factor VIII is most likely suffering from which condition?

Accepted Answer

Hemophilia A

Question 9

Which of the following is a risk factor for thromboembolic disorders?

Accepted Answer

Atherosclerosis

Question 10

A patient receives a transfusion of mismatched blood. Which of the following is a possible consequence?

Accepted Answer

Hemoglobin released into the bloodstream can cause renal failure.

Question 11

Which blood type is considered the universal donor and why?

Accepted Answer

Type O, because it lacks both A and B antigens.

Question 12

Which chemical messenger stimulates the production of platelets?

Accepted Answer

Thrombopoietin

Question 13

A patient with thrombocytopenia is at risk for which clinical sign?

Accepted Answer

Petechiae

Question 14

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 15

Which process removes clots after tissue repair and what enzyme is primarily responsible?

Accepted Answer

Fibrinolysis; plasmin

Question 16

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

Accepted Answer

Rh- mother with an Rh+ fetus during her second pregnancy

Question 17

Which of the following equations correctly represents the conversion of prothrombin to thrombin during coagulation?

Accepted Answer

$$ 	ext{Prothrombin} + 	ext{Prothrombin Activator} ightarrow 	ext{Thrombin} $$

Question 18

Which of the following mechanisms prevents platelets from adhering to healthy blood vessel walls?

Accepted Answer

Secretion of nitric oxide and prostacyclin by endothelial cells

Question 19

A patient with chronic leukemia is most likely to experience which of the following complications?

Accepted Answer

Anemia and bleeding due to crowding out of other cell lines in bone marrow

Question 20

Which blood test would be most useful to diagnose an infection based on the proportions of different white blood cells?

Accepted Answer

Differential WBC count

Chapter 17B: Blood

Study Guide - Practice Questions