Q: Which equation best represents the relationship between leukocytosis and inflammation, given that normal leukocyte count is $$5,000 to$$ $$10,000$$ cells/ml and inflammation can increase it above $$15,000$$ cells/ml?

$$\text{Leukocytosis} = \text{Leukocyte count} \u003e 15,000 \, \text{cells/ml}$$

Question 1

Which of the following best describes the primary protective role of inflammation in host defense?

Accepted Answer

It eliminates both the initial cause of injury and the consequences of tissue damage.

Question 2

A patient presents with redness and heat at the site of a skin injury. Which vascular change is primarily responsible for these symptoms during acute inflammation?

Accepted Answer

Vasodilation mediated by histamine

Question 3

Which of the following is NOT a major cause of inflammation?

Accepted Answer

Dehydration

Question 4

Which cellular receptor is most likely to recognize extracellular microbes during the initial step of inflammation?

Accepted Answer

Toll-like receptor (TLR) on plasma membrane

Question 5

A patient with persistent infection develops tissue destruction and attempts at repair with connective tissue and angiogenesis. Which type of inflammation is most likely present?

Accepted Answer

Chronic inflammation

Question 6

Which leukocyte is the predominant cell type recruited during the early phase of acute inflammation?

Accepted Answer

Neutrophils

Question 7

Which chemical mediator is primarily responsible for the immediate increase in vascular permeability during acute inflammation?

Accepted Answer

Histamine

Question 8

Which of the following best explains why chronic inflammation can lead to systemic effects such as fever and leukocytosis?

Accepted Answer

Release of acute-phase proteins and cytokines into the circulation

Question 9

A patient with rheumatoid arthritis is experiencing tissue damage due to the immune system attacking self-antigens. This is an example of which type of inflammatory cause?

Accepted Answer

Autoimmune disease

Question 10

Which sequence correctly outlines the steps of acute inflammation?

Accepted Answer

Causes of inflammation → Recognition of offending agent → Acute inflammation → Phagocytosis and clearance

Question 11

Which of the following is a key difference between acute and chronic inflammation?

Accepted Answer

Acute inflammation is short-lived and primarily involves neutrophils, while chronic inflammation is prolonged and involves macrophages and lymphocytes.

Question 12

Which of the following best describes the role of chemokines during inflammation?

Accepted Answer

They serve as chemoattractants for leukocyte recruitment.

Question 13

A patient develops a scar after a deep skin injury. Which process is primarily responsible for this outcome?

Accepted Answer

Deposition of connective tissue

Question 14

Which equation best represents the relationship between leukocytosis and inflammation, given that normal leukocyte count is $$5,000 to$$ $$10,000$$ cells/ml and inflammation can increase it above $$15,000$$ cells/ml?

Accepted Answer

$$	ext{Leukocytosis} = 	ext{Leukocyte count} \u003e 15,000 \, 	ext{cells/ml}$$

Question 15

Which tissue type is most likely to regenerate after injury due to its intrinsic proliferative capacity?

Accepted Answer

Labile tissue (e.g., bone marrow stem cells)

Question 16

Which mediator is essential for angiogenesis during tissue repair?

Accepted Answer

VEGF (Vascular Endothelial Growth Factor)

Question 17

A patient with chronic exposure to silica dust develops lung fibrosis. Which process is most responsible for the formation of fibrous tissue in this scenario?

Accepted Answer

Connective tissue deposition (scarring)

Question 18

Which of the following is a harmful consequence of uncontrolled inflammation?

Accepted Answer

Development of chronic diseases such as atherosclerosis

Question 19

During acute inflammation, which event allows leukocytes to migrate from the bloodstream to the site of injury?

Accepted Answer

Contraction of endothelial cells increasing interendothelial spaces

Question 20

Which of the following best explains why inflammation is essential for survival?

Accepted Answer

It serves as a defense mechanism to eliminate harmful agents and repair tissue.

Inflammation and Repair: Mechanisms, Mediators, and Outcomes

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