Volume Set, 10th Edition
Authors : Anton N Sidawy & Bruce A Perler
,Section 1: Basic Science
1. Which of the following best describes the function of endothelial cells in the
vascular system?
A) To produce red blood cells
B) To regulate vascular tone and permeability
C) To store cholesterol
D) To initiate clotting processes
Correct answer: B) To regulate vascular tone and permeability
Rationale: Endothelial cells line blood vessels and are responsible for regulating
vascular tone, permeability, and facilitating the passage of nutrients and waste
products.
DIF: Easy
OBJ: Understand the basic function of endothelial cells in vascular biology.
TOP: Vessel Wall Biology
REF: Chapter on Vessel Wall Biology
MSC: Recall
2. Which of the following is a key feature of the process of ischemia-reperfusion
injury?
A) Increased production of nitric oxide
B) Excessive mitochondrial function following reperfusion
C) Reactive oxygen species (ROS) generation
D) Decreased neutrophil infiltration
Correct answer: C) Reactive oxygen species (ROS) generation
Rationale: Ischemia-reperfusion injury is characterized by the generation of
reactive oxygen species (ROS) that damage tissues upon the restoration of blood
flow.
DIF: Moderate
OBJ: Understand the pathophysiology of ischemia-reperfusion injury.
TOP: Ischemia-Reperfusion
REF: Chapter on Ischemia-Reperfusion
MSC: Comprehension
3. Which of the following factors is most strongly associated with the development of
atherosclerosis?
A) High levels of high-density lipoprotein (HDL)
B) Chronic inflammation
C) High physical activity levels
, D) Elevated insulin sensitivity
Correct answer: B) Chronic inflammation
Rationale: Chronic inflammation plays a significant role in the initiation and
progression of atherosclerosis by contributing to endothelial injury and plaque
formation.
DIF: Moderate
OBJ: Identify the factors contributing to atherosclerosis.
TOP: Atherosclerosis
REF: Chapter on Atherosclerosis
MSC: Comprehension
4. Select all the correct statements regarding the role of endothelial cells in
atherosclerotic plaque formation.
A) Endothelial dysfunction facilitates the recruitment of inflammatory cells.
B) Endothelial cells release pro-inflammatory cytokines.
C) Endothelial cells enhance platelet aggregation.
D) Endothelial cells produce collagen to form the fibrous cap of plaques.
Correct answers: A, B, C
Rationale: Endothelial dysfunction contributes to the recruitment of inflammatory
cells, the release of pro-inflammatory cytokines, and enhanced platelet
aggregation, which are all critical in plaque formation.
DIF: Moderate
OBJ: Understand the role of endothelial cells in vascular pathology.
TOP: Atherosclerosis
REF: Chapter on Atherosclerosis
MSC: Application
5. During the embryonic development of the vascular system, which structure initially
forms the basis for the formation of the arterial system?
A) Mesodermal layer
B) Ectodermal layer
C) Endodermal layer
D) Neural crest cells
Correct answer: A) Mesodermal layer
Rationale: The mesodermal layer is responsible for the formation of blood vessels
during embryogenesis, including the arterial system.
DIF: Easy
OBJ: Understand the basic developmental origins of the vascular system.
TOP: Embryology and Developmental Anatomy
, REF: Chapter on Embryology and Developmental Anatomy
MSC: Recall
6. Which of the following mechanisms is most important for maintaining blood flow in
occluded vessels?
A) Vasoconstriction
B) Arteriogenesis
C) Venous thrombosis
D) Lymphatic drainage
Correct answer: B) Arteriogenesis
Rationale: Arteriogenesis refers to the process of remodeling pre-existing collateral
vessels to increase blood flow when primary arteries become occluded.
DIF: Moderate
OBJ: Understand compensatory mechanisms in vascular occlusion.
TOP: Arteriogenesis and Angiogenesis
REF: Chapter on Arteriogenesis and Angiogenesis
MSC: Application
7. Which of the following is an important characteristic of venous insufficiency?
A) Increased blood flow through deep veins
B) Valve incompetence and blood pooling
C) Increased oxygenation of tissues in affected areas
D) Decreased inflammatory response in the affected vessels
Correct answer: B) Valve incompetence and blood pooling
Rationale: Venous insufficiency is characterized by valve incompetence leading to
blood pooling, which can result in symptoms such as varicose veins and edema.
DIF: Moderate
OBJ: Recognize the key pathophysiological features of venous disease.
TOP: Venous Pathophysiology
REF: Chapter on Venous Pathophysiology
MSC: Comprehension
8. In a patient with arterial hypertension, which of the following is most likely to occur
in response to increased shear stress on the vessel walls?
A) Endothelial cell apoptosis
B) Vascular remodeling
C) Decreased arterial stiffness
D) Reduction in vessel diameter
Correct answer: B) Vascular remodeling
Rationale: Chronic hypertension increases shear stress on the vessel walls,
prompting vascular remodeling, which may involve vessel wall thickening and