PATHOPHYSIOLOGY HESI EXAM QUESTIONS & ANSWERS 2026-2027 | HIGH-… EXAM
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Pathophysiology HESI
Exam Questions & Answers
2026-2027 | High-Yield
Clinical Review
(Rationales)
Verified Answers Exam Ready With Rationales
162 QUESTIONS
DOCUMENT OVERVIEW
This document provides 162 high-yield pathophysiology review questions, each with the correct answer
and a detailed rationale. It covers essential clinical concepts for advanced nursing study. This resource is
ideal for comprehensive exam preparation, reinforcing understanding of disease processes and their
clinical implications.
CONTENTS
• Cellular Processes & Adaptations • Neurological & Sensory Pathophysiology
• Fluid & Electrolyte Balance • Hematology & Immunology
• Acid-Base & Respiratory Pathophysiology • Pharmacology & Therapeutics
• Urinary & Reproductive Pathophysiology • Genetics & Disease Mechanisms
• Oncology • Cardiovascular Pathophysiology
• Endocrine & Metabolic Pathophysiology
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 162
a. positive feedback
CORRECT ANSWER
An initial disturbance in a system sets off a chain of events that does not favor stability and often abruptly
displaces a system from its steady state: what is that?
a. Positive Feedback
b. Negative Feedback
c. Disease
d. Homeostasis
RATIONALE
Positive feedback amplifies an initial disturbance, driving the system away from its stable equilibrium rather than
returning it to a steady state. This mechanism is characterized by a response that reinforces the initial change.
Q2 QUESTION 2 OF 162
d. They cross by diffusion
CORRECT ANSWER
By what mechanism do lipid molecules cross cell membranes?
a. They use channel proteins as a membrane transport system
b. They are transported across the plasma membrane by endocytosis and exocytosis
c. They use voltage-gated ion channels
d. They cross by diffusion
RATIONALE
Lipid molecules are small and nonpolar, allowing them to readily dissolve in the lipid bilayer and move across it
passively down their concentration gradient via simple diffusion. This process does not require transport proteins
or vesicular mechanisms.
Q3 QUESTION 3 OF 162
a. Protein synthesis
Page 2
, CORRECT ANSWER
Which of the following metabolic processes is a component of anabolic metabolism?
a. Protein synthesis
b. Glycolysis
c. Citric acid cycle
d. Oxidative phosphorylation
RATIONALE
Anabolic metabolism synthesizes complex molecules, and protein synthesis builds proteins from amino acids.
Glycolysis, the citric acid cycle, and oxidative phosphorylation are catabolic processes that break down
molecules to release energy.
Q4 QUESTION 4 OF 162
c. The sodium-potassium pump
CORRECT ANSWER
Which of the following electrochemical mechanism is responsible for maintaining cell volume?
a. The calcium pump
b. Glucose transporters
c. The sodium-potassium pump
d. ATP-binding cassette (ABC) transporters
RATIONALE
The sodium-potassium pump actively transports three sodium ions out of the cell and two potassium ions into
the cell, establishing electrochemical gradients that drive osmotic balance and thus maintain cell volume. This
establishes the key concept of active transport and its role in cellular homeostasis.
Q5 QUESTION 5 OF 162
d. Failure of the sodium-potassium pump
CORRECT ANSWER
Cellular hypoxia results in:
a. Enhanced ATP activity
b. Loss of intracellular calcium
c. Increased pH
d. Failure of the sodium-potassium pump
RATIONALE
Cellular hypoxia impairs aerobic respiration, leading to a drastic reduction in ATP production and subsequent
failure of the ATP-dependent sodium-potassium pump, causing ion imbalance and cellular swelling. This
addresses the core consequence of oxygen deprivation on cellular energy metabolism and membrane integrity.
Page 3
, Q6 QUESTION 6 OF 162
a. Atrophy of her leg muscles
CORRECT ANSWER
A 75 yo woman develops weakness in her lower extremities after a prolonged period of bed rest. This is most
likely caused by:
a. Atrophy of her leg muscles
b. Dysplasia of her leg muscles
c. Hypertrophy of her leg muscles
d. Hyperplasia of her leg muscles
RATIONALE
Prolonged immobility leads to disuse atrophy, characterized by a decrease in muscle mass and strength due to
reduced cellular protein synthesis. This physiological adaptation contrasts with dysplasia (abnormal
development), hypertrophy (increase in cell size), or hyperplasia (increase in cell number).
Q7 QUESTION 7 OF 162
c. Atrophy
CORRECT ANSWER
Which of the following types of cellular adaption is most likely to occur from chronic ischemia?
a. Hypertrophy
b. Metaplasia
c. Atrophy
d. Hyperplasia
RATIONALE
Chronic ischemia reduces cellular metabolic demands and nutrient supply, leading to a decrease in cell size and
number through the process of atrophy. This occurs because the cell adapts to a hostile environment by shrinking
to maintain viability.
Q8 QUESTION 8 OF 162
d. Gas bubbles from in the blood, blocking circulation and resulting in ischemia
CORRECT ANSWER
What is the mechanism of cellular injury that occurs when deep sea divers get 'the bends'?
a. Free radicals form abnormal chemical bonds which destroy the cellular membranes
b. Carbon monoxide binds tightly to hemoglobin, preventing the RBCs from carrying O2
c. Intracellular calcium accumlation create muscle tetany
d. Gas bubbles from in the blood, blocking circulation and resulting in ischemia
Page 4
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Pathophysiology HESI
Exam Questions & Answers
2026-2027 | High-Yield
Clinical Review
(Rationales)
Verified Answers Exam Ready With Rationales
162 QUESTIONS
DOCUMENT OVERVIEW
This document provides 162 high-yield pathophysiology review questions, each with the correct answer
and a detailed rationale. It covers essential clinical concepts for advanced nursing study. This resource is
ideal for comprehensive exam preparation, reinforcing understanding of disease processes and their
clinical implications.
CONTENTS
• Cellular Processes & Adaptations • Neurological & Sensory Pathophysiology
• Fluid & Electrolyte Balance • Hematology & Immunology
• Acid-Base & Respiratory Pathophysiology • Pharmacology & Therapeutics
• Urinary & Reproductive Pathophysiology • Genetics & Disease Mechanisms
• Oncology • Cardiovascular Pathophysiology
• Endocrine & Metabolic Pathophysiology
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 162
a. positive feedback
CORRECT ANSWER
An initial disturbance in a system sets off a chain of events that does not favor stability and often abruptly
displaces a system from its steady state: what is that?
a. Positive Feedback
b. Negative Feedback
c. Disease
d. Homeostasis
RATIONALE
Positive feedback amplifies an initial disturbance, driving the system away from its stable equilibrium rather than
returning it to a steady state. This mechanism is characterized by a response that reinforces the initial change.
Q2 QUESTION 2 OF 162
d. They cross by diffusion
CORRECT ANSWER
By what mechanism do lipid molecules cross cell membranes?
a. They use channel proteins as a membrane transport system
b. They are transported across the plasma membrane by endocytosis and exocytosis
c. They use voltage-gated ion channels
d. They cross by diffusion
RATIONALE
Lipid molecules are small and nonpolar, allowing them to readily dissolve in the lipid bilayer and move across it
passively down their concentration gradient via simple diffusion. This process does not require transport proteins
or vesicular mechanisms.
Q3 QUESTION 3 OF 162
a. Protein synthesis
Page 2
, CORRECT ANSWER
Which of the following metabolic processes is a component of anabolic metabolism?
a. Protein synthesis
b. Glycolysis
c. Citric acid cycle
d. Oxidative phosphorylation
RATIONALE
Anabolic metabolism synthesizes complex molecules, and protein synthesis builds proteins from amino acids.
Glycolysis, the citric acid cycle, and oxidative phosphorylation are catabolic processes that break down
molecules to release energy.
Q4 QUESTION 4 OF 162
c. The sodium-potassium pump
CORRECT ANSWER
Which of the following electrochemical mechanism is responsible for maintaining cell volume?
a. The calcium pump
b. Glucose transporters
c. The sodium-potassium pump
d. ATP-binding cassette (ABC) transporters
RATIONALE
The sodium-potassium pump actively transports three sodium ions out of the cell and two potassium ions into
the cell, establishing electrochemical gradients that drive osmotic balance and thus maintain cell volume. This
establishes the key concept of active transport and its role in cellular homeostasis.
Q5 QUESTION 5 OF 162
d. Failure of the sodium-potassium pump
CORRECT ANSWER
Cellular hypoxia results in:
a. Enhanced ATP activity
b. Loss of intracellular calcium
c. Increased pH
d. Failure of the sodium-potassium pump
RATIONALE
Cellular hypoxia impairs aerobic respiration, leading to a drastic reduction in ATP production and subsequent
failure of the ATP-dependent sodium-potassium pump, causing ion imbalance and cellular swelling. This
addresses the core consequence of oxygen deprivation on cellular energy metabolism and membrane integrity.
Page 3
, Q6 QUESTION 6 OF 162
a. Atrophy of her leg muscles
CORRECT ANSWER
A 75 yo woman develops weakness in her lower extremities after a prolonged period of bed rest. This is most
likely caused by:
a. Atrophy of her leg muscles
b. Dysplasia of her leg muscles
c. Hypertrophy of her leg muscles
d. Hyperplasia of her leg muscles
RATIONALE
Prolonged immobility leads to disuse atrophy, characterized by a decrease in muscle mass and strength due to
reduced cellular protein synthesis. This physiological adaptation contrasts with dysplasia (abnormal
development), hypertrophy (increase in cell size), or hyperplasia (increase in cell number).
Q7 QUESTION 7 OF 162
c. Atrophy
CORRECT ANSWER
Which of the following types of cellular adaption is most likely to occur from chronic ischemia?
a. Hypertrophy
b. Metaplasia
c. Atrophy
d. Hyperplasia
RATIONALE
Chronic ischemia reduces cellular metabolic demands and nutrient supply, leading to a decrease in cell size and
number through the process of atrophy. This occurs because the cell adapts to a hostile environment by shrinking
to maintain viability.
Q8 QUESTION 8 OF 162
d. Gas bubbles from in the blood, blocking circulation and resulting in ischemia
CORRECT ANSWER
What is the mechanism of cellular injury that occurs when deep sea divers get 'the bends'?
a. Free radicals form abnormal chemical bonds which destroy the cellular membranes
b. Carbon monoxide binds tightly to hemoglobin, preventing the RBCs from carrying O2
c. Intracellular calcium accumlation create muscle tetany
d. Gas bubbles from in the blood, blocking circulation and resulting in ischemia
Page 4
