1. Which of the following is most characteristic of acute inflammation?
A) Chronic cell infiltration
B) Presence of neutrophils
C) Formation of granulomas
D) Scar tissue formation
Answer: B) Presence of neutrophils
Rationale: Acute inflammation is characterized by the rapid response to
tissue injury, marked by the infiltration of neutrophils, the release of
inflammatory mediators like cytokines, and changes in the blood vessels
to allow immune cells to migrate to the site of injury. Chronic
inflammation, on the other hand, is marked by the infiltration of
lymphocytes, macrophages, and the formation of granulomas.
2. Which of the following is the most likely cause of an increased
mean arterial pressure (MAP) in a patient with atherosclerosis?
A) Decreased cardiac output
B) Increased systemic vascular resistance
C) Reduced kidney filtration
D) Decreased blood volume
Answer: B) Increased systemic vascular resistance
Rationale: In atherosclerosis, the narrowing and stiffening of arteries
increase systemic vascular resistance. This leads to an increase in blood
pressure, particularly the mean arterial pressure (MAP), as the heart
works harder to overcome the resistance in the peripheral vessels.
3. Which of the following hormones is primarily responsible for
regulating the body's response to stress?
,A) Insulin
B) Cortisol
C) Thyroxine
D) Growth hormone
Answer: B) Cortisol
Rationale: Cortisol is the primary hormone released by the adrenal
glands in response to stress. It is part of the body's "fight or flight"
response and plays a critical role in maintaining blood pressure, blood
sugar levels, and immune response during stress.
4. Which pathophysiological change is most commonly associated
with hyperglycemia in diabetes mellitus?
A) Decreased insulin secretion
B) Increased renal excretion of glucose
C) Decreased hepatic glucose production
D) Increased insulin sensitivity
Answer: A) Decreased insulin secretion
Rationale: In diabetes mellitus, particularly type 1, there is insufficient
insulin production by the pancreas. In type 2 diabetes, insulin resistance
occurs, but the pancreas may initially compensate by producing more
insulin. Either way, the result is hyperglycemia due to inadequate insulin
action.
5. Which of the following lab findings would be most indicative of liver
dysfunction?
A) Low bilirubin levels
B) Increased albumin synthesis
, C) Elevated transaminases (AST, ALT)
D) Increased creatinine clearance
Answer: C) Elevated transaminases (AST, ALT)
Rationale: Elevated levels of liver enzymes such as AST (aspartate
transaminase) and ALT (alanine transaminase) are commonly associated
with liver cell injury, reflecting hepatocellular damage. Bilirubin and
albumin levels are typically altered in severe liver dysfunction but are
less specific than elevated transaminases.
6. Which of the following is the most likely pathophysiological
mechanism of a myocardial infarction (MI)?
A) Inflammation of the pericardium
B) Increased heart rate causing ischemia
C) Formation of a thrombus in a coronary artery
D) Decreased oxygen demand by the myocardium
Answer: C) Formation of a thrombus in a coronary artery
Rationale: A myocardial infarction (MI) is typically caused by the
rupture of an atherosclerotic plaque in a coronary artery, leading to the
formation of a thrombus (blood clot) that occludes the artery. This
blockage deprives the heart muscle of oxygen, resulting in ischemia and
tissue death.
7. In which condition would you most likely see a decreased forced
expiratory volume in 1 second (FEV1)?
A) Asthma
B) Emphysema
A) Chronic cell infiltration
B) Presence of neutrophils
C) Formation of granulomas
D) Scar tissue formation
Answer: B) Presence of neutrophils
Rationale: Acute inflammation is characterized by the rapid response to
tissue injury, marked by the infiltration of neutrophils, the release of
inflammatory mediators like cytokines, and changes in the blood vessels
to allow immune cells to migrate to the site of injury. Chronic
inflammation, on the other hand, is marked by the infiltration of
lymphocytes, macrophages, and the formation of granulomas.
2. Which of the following is the most likely cause of an increased
mean arterial pressure (MAP) in a patient with atherosclerosis?
A) Decreased cardiac output
B) Increased systemic vascular resistance
C) Reduced kidney filtration
D) Decreased blood volume
Answer: B) Increased systemic vascular resistance
Rationale: In atherosclerosis, the narrowing and stiffening of arteries
increase systemic vascular resistance. This leads to an increase in blood
pressure, particularly the mean arterial pressure (MAP), as the heart
works harder to overcome the resistance in the peripheral vessels.
3. Which of the following hormones is primarily responsible for
regulating the body's response to stress?
,A) Insulin
B) Cortisol
C) Thyroxine
D) Growth hormone
Answer: B) Cortisol
Rationale: Cortisol is the primary hormone released by the adrenal
glands in response to stress. It is part of the body's "fight or flight"
response and plays a critical role in maintaining blood pressure, blood
sugar levels, and immune response during stress.
4. Which pathophysiological change is most commonly associated
with hyperglycemia in diabetes mellitus?
A) Decreased insulin secretion
B) Increased renal excretion of glucose
C) Decreased hepatic glucose production
D) Increased insulin sensitivity
Answer: A) Decreased insulin secretion
Rationale: In diabetes mellitus, particularly type 1, there is insufficient
insulin production by the pancreas. In type 2 diabetes, insulin resistance
occurs, but the pancreas may initially compensate by producing more
insulin. Either way, the result is hyperglycemia due to inadequate insulin
action.
5. Which of the following lab findings would be most indicative of liver
dysfunction?
A) Low bilirubin levels
B) Increased albumin synthesis
, C) Elevated transaminases (AST, ALT)
D) Increased creatinine clearance
Answer: C) Elevated transaminases (AST, ALT)
Rationale: Elevated levels of liver enzymes such as AST (aspartate
transaminase) and ALT (alanine transaminase) are commonly associated
with liver cell injury, reflecting hepatocellular damage. Bilirubin and
albumin levels are typically altered in severe liver dysfunction but are
less specific than elevated transaminases.
6. Which of the following is the most likely pathophysiological
mechanism of a myocardial infarction (MI)?
A) Inflammation of the pericardium
B) Increased heart rate causing ischemia
C) Formation of a thrombus in a coronary artery
D) Decreased oxygen demand by the myocardium
Answer: C) Formation of a thrombus in a coronary artery
Rationale: A myocardial infarction (MI) is typically caused by the
rupture of an atherosclerotic plaque in a coronary artery, leading to the
formation of a thrombus (blood clot) that occludes the artery. This
blockage deprives the heart muscle of oxygen, resulting in ischemia and
tissue death.
7. In which condition would you most likely see a decreased forced
expiratory volume in 1 second (FEV1)?
A) Asthma
B) Emphysema
