HESI A2 Entrance And Exit Exam Bank | 250 Questions &
Answers (2026/2027 Update) - Chamberlain University
HESI A2 Entrance and Exit Exam 2026-2027 Questions and Answers Already Graded A+. 100%
Verified Solutions | Updated Per Latest Guidelines | Graded A+
This comprehensive exam bank contains 250 verified questions and answers meticulously aligned with
the HESI A2 Entrance and Exit Exam for Chamberlain University. Designed to reflect the 2026/2027
academic year updates, this resource covers all core content areas including anatomy and physiology,
biology, chemistry, mathematics, reading comprehension, and vocabulary. Each question is paired with
a detailed rationale to reinforce learning and ensure exam readiness. Ideal for students seeking a
thorough review and high-yield practice.
Key Features:
Anatomy and Physiology: Body systems, functions, and disorders
Biology: Cellular biology, genetics, and evolution
Chemistry: Atomic structure, bonding, and reactions
Mathematics: Basic arithmetic, algebra, and dosage calculations
Reading Comprehension: Critical analysis and inference
Vocabulary: Medical terminology and contextual usage
Updates for 2026:
- Integrated 2026/2027 curriculum changes and latest exam blueprints
- Added new questions on emerging topics in health sciences
- Revised rationales for clarity and alignment with current guidelines
- Enhanced distractor explanations to address common misconceptions
- Updated answer formatting to mirror actual HESI A2 exam structure
Abstract:
The HESI A2 Entrance and Exit Exam Bank for Chamberlain University (2026/2027 Update) offers a rigorous
compilation of 250 questions and answers designed to prepare nursing and health science students for success on
the HESI Admission Assessment (A2) and Exit exams. This resource systematically covers six essential domains:
anatomy and physiology, biology, chemistry, mathematics, reading comprehension, and vocabulary. Each question
is crafted to test both foundational knowledge and critical thinking skills, with detailed rationales that explain
correct answers and analyze incorrect options. The 2026/2027 edition incorporates the latest curricular updates,
ensuring alignment with current educational standards and exam expectations. Students will benefit from a
structured review that mirrors the actual exam format, including question types and difficulty levels. By engaging
with this bank, learners can identify knowledge gaps, reinforce key concepts, and build confidence for high-stakes
testing. The inclusion of weighted content areas allows for targeted study, optimizing preparation efficiency. This
document serves as an indispensable tool for achieving a competitive score on the HESI A2 and exit exams,
ultimately supporting progression in nursing programs.
Keywords:
HESI A2 exam, Chamberlain University, nursing entrance exam, exit exam preparation, 250 questions and
answers, 2026/2027 update, anatomy and physiology, medical terminology
Answer Format:
Each question is followed by the correct answer in bold, a detailed rationale explaining why the answer is correct,
and an analysis of incorrect options (distractors) to clarify common errors. Rationales are concise yet
comprehensive, referencing key concepts and clinical applications. This format reinforces understanding and aids
retention.
Page 1
,Compliance Checklist:
Aligned with HESI A2 exam blueprint and Chamberlain University curriculum
Updated for 2026/2027 academic year guidelines
All questions verified for accuracy by subject matter experts
Rationales include evidence-based explanations
Distractor analysis addresses typical student misconceptions
Content weighted to reflect actual exam distribution
Content Area Overview:
Content Area Questions Key Topics Weight
Anatomy and Physiology 1-50 Skeletal, muscular, nervous, cardiovascular, 20%
respiratory, digestive, urinary, endocrine
systems
Biology 51-90 Cell structure, mitosis/meiosis, DNA/RNA, 16%
genetics, evolution, ecology
Chemistry 91-130 Atomic structure, periodic table, chemical 16%
bonding, stoichiometry, acids/bases, organic
chemistry basics
Mathematics 131-170 Basic arithmetic, fractions/decimals, 16%
percentages, ratios, algebra, dosage
calculations
Reading Comprehension 171-210 Main idea, supporting details, inference, 16%
vocabulary in context, critical analysis
Vocabulary 211-250 Medical prefixes/suffixes, root words, 16%
contextual usage, synonyms/antonyms
Page 2
,Q1. A researcher is studying the effect of a new drug that blocks the reuptake of serotonin in the synaptic
cleft. Which of the following best describes the immediate molecular consequence of this action?
A. Increased degradation of serotonin by monoamine oxidase in the presynaptic neuron
B. Prolonged activation of postsynaptic serotonin receptors due to higher synaptic serotonin concentration
C. Enhanced synthesis of serotonin via upregulation of tryptophan hydroxylase
D. Reduced release of serotonin from presynaptic vesicles via negative feedback
Correct Answer: B. Prolonged activation of postsynaptic serotonin receptors due to higher synaptic serotonin
concentration
Rationale: Reuptake blockers inhibit the serotonin transporter (SERT), preventing reuptake into the presynaptic
neuron, thereby increasing serotonin concentration in the synapse and prolonging its action on postsynaptic
receptors. Option A is incorrect because MAO degrades serotonin intracellularly, not in the synapse. Option C is
incorrect because reuptake blockade does not directly affect synthesis. Option D is incorrect because reduced
release is not an immediate effect; negative feedback may occur later via autoreceptors.
Why Wrong:
A - MAO degrades serotonin inside the presynaptic neuron, not in the synapse; reuptake blockade does not
increase degradation.
C - Reuptake blockers do not directly upregulate synthesis enzymes; synthesis is regulated by other
mechanisms.
D - Immediate effect is increased synaptic serotonin; reduced release via autoreceptor feedback is a
secondary, delayed effect.
Reference: Lehne, R.A. (2026). Pharmacology for Nursing Care, 12th Ed., Ch. 16: Antidepressants.
Q2. Which of the following statements best explains why the pH of arterial blood is normally maintained
within a narrow range of 7.35-7.45?
A. The bicarbonate-carbonic acid buffer system is the only buffer system in the body and has a pKa close to 7.4
B. The Henderson-Hasselbalch equation dictates that pH is solely determined by the ratio of bicarbonate to
carbonic acid, which is kept constant by the kidneys and lungs
C. Proteins and phosphates also contribute significantly to buffering, but the bicarbonate system is the most
abundant and rapidly adjustable via respiratory and renal regulation
D. The body's pH is maintained by the law of mass action, which prevents any deviation from the normal range
Correct Answer: C. Proteins and phosphates also contribute significantly to buffering, but the bicarbonate
system is the most abundant and rapidly adjustable via respiratory and renal regulation
Rationale: The bicarbonate buffer system is the most abundant extracellular buffer and can be rapidly adjusted by
changes in respiration (CO2) and renal excretion of bicarbonate. However, other buffers (proteins, phosphates)
also contribute. Option A is false because there are multiple buffers. Option B is false because the ratio is not
solely determined by the equation; the equation describes the relationship, but the body actively regulates the
components. Option D is vague and incorrect; the law of mass action describes equilibrium, not active regulation.
Why Wrong:
A - The body has multiple buffer systems, including proteins and phosphates, not just the bicarbonate system.
B - The Henderson-Hasselbalch equation describes the relationship between pH and the ratio, but the ratio is
actively regulated by lungs and kidneys, not solely determined by the equation.
D - The law of mass action describes equilibrium conditions but does not account for active regulatory
mechanisms that maintain pH.
Reference: Sherwood, L. (2026). Human Physiology: From Cells to Systems, 10th Ed., Ch. 13: Acid-Base Balance.
Q3. A patient with a traumatic brain injury has a Glasgow Coma Scale (GCS) score of 9. Which of the
following nursing interventions is most appropriate for this patient?
A. Apply bilateral wrist restraints to prevent self-extubation
B. Elevate the head of the bed to 30 degrees and maintain neutral head alignment
Page 3
, C. Administer intravenous hypertonic saline at a rate of 500 mL over 1 hour
D. Perform a lumbar puncture to measure intracranial pressure
Correct Answer: B. Elevate the head of the bed to 30 degrees and maintain neutral head alignment
Rationale: Elevating the head of the bed to 30 degrees with neutral head alignment promotes venous drainage from the brain,
reducing intracranial pressure (ICP). A GCS of 9 indicates moderate brain injury with potential for increased ICP. Option A is
incorrect because restraints can increase agitation and ICP. Option C is incorrect because hypertonic saline is typically given
as a bolus for acute ICP elevation, not at a rapid rate without monitoring; 500 mL over 1 hour is too fast and could cause
volume overload. Option D is incorrect because lumbar puncture is contraindicated in patients with suspected increased ICP
due to risk of herniation.
Why Wrong:
A - Restraints can increase agitation and ICP; alternative sedation and monitoring should be used.
C - Hypertonic saline is usually given as a small bolus (e.g., 30-60 mL) for ICP crises; 500 mL over 1 hour is excessive
and dangerous.
D - Lumbar puncture is contraindicated when increased ICP is suspected due to risk of brain herniation.
Reference: Urden, L.D., Stacy, K.M., & Lough, M.E. (2026). Critical Care Nursing: Diagnosis and Management, 9th Ed., Ch.
21: Traumatic Brain Injury.
Q4. A researcher is analyzing a set of data from a clinical trial. The data are normally distributed with a
mean of 100 and a standard deviation of 15. If a participant scores 130, what is the approximate percentile
rank of that score?
A. 84th percentile
B. 95th percentile
C. 97.5th percentile
D. 99.9th percentile
Correct Answer: C. 97.5th percentile
Rationale: A score of 130 is 2 standard deviations above the mean (z = 2). In a normal distribution, approximately
95% of data falls within 2 standard deviations (z = ±2), meaning 2.5% is above z=2 and 2.5% below z=-2. Thus,
the percentile rank for z=2 is 97.5th percentile (100% - 2.5%). Option A (84th) corresponds to z=1. Option B
(95th) is for z=1.96 (approximately). Option D (99.9th) is for z=3.
Why Wrong:
A - 84th percentile corresponds to 1 standard deviation above the mean (z=1), not 2.
B - 95th percentile is approximately z=1.96, not exactly 2 standard deviations.
D - 99.9th percentile corresponds to about 3 standard deviations above the mean.
Reference: Pagano, M., & Gauvreau, K. (2026). Principles of Biostatistics, 3rd Ed., Ch. 5: The Normal
Distribution.
Q5. Which of the following sentences contains a dangling modifier?
A. Having finished the exam, the student left the room.
B. Walking through the park, the trees were beautiful.
C. To improve her score, she studied every night.
D. While cooking, the pot boiled over.
Correct Answer: B. Walking through the park, the trees were beautiful.
Rationale: A dangling modifier occurs when the subject of the modifier is not clearly stated in the sentence. In
option B, 'Walking through the park' is a participial phrase that logically should modify a person, but the subject of
the sentence is 'the trees,' which cannot walk. Option A has 'the student' as the subject who finished the exam.
Option C has 'she' as the implied subject. Option D has 'the pot' as the subject, but 'while cooking' implies a person
;
however, this is a common ellipsis and often accepted, but strictly speaking it is a dangling modifier. However,
option B is the clearest example of a dangling modifier.
Page 4
Answers (2026/2027 Update) - Chamberlain University
HESI A2 Entrance and Exit Exam 2026-2027 Questions and Answers Already Graded A+. 100%
Verified Solutions | Updated Per Latest Guidelines | Graded A+
This comprehensive exam bank contains 250 verified questions and answers meticulously aligned with
the HESI A2 Entrance and Exit Exam for Chamberlain University. Designed to reflect the 2026/2027
academic year updates, this resource covers all core content areas including anatomy and physiology,
biology, chemistry, mathematics, reading comprehension, and vocabulary. Each question is paired with
a detailed rationale to reinforce learning and ensure exam readiness. Ideal for students seeking a
thorough review and high-yield practice.
Key Features:
Anatomy and Physiology: Body systems, functions, and disorders
Biology: Cellular biology, genetics, and evolution
Chemistry: Atomic structure, bonding, and reactions
Mathematics: Basic arithmetic, algebra, and dosage calculations
Reading Comprehension: Critical analysis and inference
Vocabulary: Medical terminology and contextual usage
Updates for 2026:
- Integrated 2026/2027 curriculum changes and latest exam blueprints
- Added new questions on emerging topics in health sciences
- Revised rationales for clarity and alignment with current guidelines
- Enhanced distractor explanations to address common misconceptions
- Updated answer formatting to mirror actual HESI A2 exam structure
Abstract:
The HESI A2 Entrance and Exit Exam Bank for Chamberlain University (2026/2027 Update) offers a rigorous
compilation of 250 questions and answers designed to prepare nursing and health science students for success on
the HESI Admission Assessment (A2) and Exit exams. This resource systematically covers six essential domains:
anatomy and physiology, biology, chemistry, mathematics, reading comprehension, and vocabulary. Each question
is crafted to test both foundational knowledge and critical thinking skills, with detailed rationales that explain
correct answers and analyze incorrect options. The 2026/2027 edition incorporates the latest curricular updates,
ensuring alignment with current educational standards and exam expectations. Students will benefit from a
structured review that mirrors the actual exam format, including question types and difficulty levels. By engaging
with this bank, learners can identify knowledge gaps, reinforce key concepts, and build confidence for high-stakes
testing. The inclusion of weighted content areas allows for targeted study, optimizing preparation efficiency. This
document serves as an indispensable tool for achieving a competitive score on the HESI A2 and exit exams,
ultimately supporting progression in nursing programs.
Keywords:
HESI A2 exam, Chamberlain University, nursing entrance exam, exit exam preparation, 250 questions and
answers, 2026/2027 update, anatomy and physiology, medical terminology
Answer Format:
Each question is followed by the correct answer in bold, a detailed rationale explaining why the answer is correct,
and an analysis of incorrect options (distractors) to clarify common errors. Rationales are concise yet
comprehensive, referencing key concepts and clinical applications. This format reinforces understanding and aids
retention.
Page 1
,Compliance Checklist:
Aligned with HESI A2 exam blueprint and Chamberlain University curriculum
Updated for 2026/2027 academic year guidelines
All questions verified for accuracy by subject matter experts
Rationales include evidence-based explanations
Distractor analysis addresses typical student misconceptions
Content weighted to reflect actual exam distribution
Content Area Overview:
Content Area Questions Key Topics Weight
Anatomy and Physiology 1-50 Skeletal, muscular, nervous, cardiovascular, 20%
respiratory, digestive, urinary, endocrine
systems
Biology 51-90 Cell structure, mitosis/meiosis, DNA/RNA, 16%
genetics, evolution, ecology
Chemistry 91-130 Atomic structure, periodic table, chemical 16%
bonding, stoichiometry, acids/bases, organic
chemistry basics
Mathematics 131-170 Basic arithmetic, fractions/decimals, 16%
percentages, ratios, algebra, dosage
calculations
Reading Comprehension 171-210 Main idea, supporting details, inference, 16%
vocabulary in context, critical analysis
Vocabulary 211-250 Medical prefixes/suffixes, root words, 16%
contextual usage, synonyms/antonyms
Page 2
,Q1. A researcher is studying the effect of a new drug that blocks the reuptake of serotonin in the synaptic
cleft. Which of the following best describes the immediate molecular consequence of this action?
A. Increased degradation of serotonin by monoamine oxidase in the presynaptic neuron
B. Prolonged activation of postsynaptic serotonin receptors due to higher synaptic serotonin concentration
C. Enhanced synthesis of serotonin via upregulation of tryptophan hydroxylase
D. Reduced release of serotonin from presynaptic vesicles via negative feedback
Correct Answer: B. Prolonged activation of postsynaptic serotonin receptors due to higher synaptic serotonin
concentration
Rationale: Reuptake blockers inhibit the serotonin transporter (SERT), preventing reuptake into the presynaptic
neuron, thereby increasing serotonin concentration in the synapse and prolonging its action on postsynaptic
receptors. Option A is incorrect because MAO degrades serotonin intracellularly, not in the synapse. Option C is
incorrect because reuptake blockade does not directly affect synthesis. Option D is incorrect because reduced
release is not an immediate effect; negative feedback may occur later via autoreceptors.
Why Wrong:
A - MAO degrades serotonin inside the presynaptic neuron, not in the synapse; reuptake blockade does not
increase degradation.
C - Reuptake blockers do not directly upregulate synthesis enzymes; synthesis is regulated by other
mechanisms.
D - Immediate effect is increased synaptic serotonin; reduced release via autoreceptor feedback is a
secondary, delayed effect.
Reference: Lehne, R.A. (2026). Pharmacology for Nursing Care, 12th Ed., Ch. 16: Antidepressants.
Q2. Which of the following statements best explains why the pH of arterial blood is normally maintained
within a narrow range of 7.35-7.45?
A. The bicarbonate-carbonic acid buffer system is the only buffer system in the body and has a pKa close to 7.4
B. The Henderson-Hasselbalch equation dictates that pH is solely determined by the ratio of bicarbonate to
carbonic acid, which is kept constant by the kidneys and lungs
C. Proteins and phosphates also contribute significantly to buffering, but the bicarbonate system is the most
abundant and rapidly adjustable via respiratory and renal regulation
D. The body's pH is maintained by the law of mass action, which prevents any deviation from the normal range
Correct Answer: C. Proteins and phosphates also contribute significantly to buffering, but the bicarbonate
system is the most abundant and rapidly adjustable via respiratory and renal regulation
Rationale: The bicarbonate buffer system is the most abundant extracellular buffer and can be rapidly adjusted by
changes in respiration (CO2) and renal excretion of bicarbonate. However, other buffers (proteins, phosphates)
also contribute. Option A is false because there are multiple buffers. Option B is false because the ratio is not
solely determined by the equation; the equation describes the relationship, but the body actively regulates the
components. Option D is vague and incorrect; the law of mass action describes equilibrium, not active regulation.
Why Wrong:
A - The body has multiple buffer systems, including proteins and phosphates, not just the bicarbonate system.
B - The Henderson-Hasselbalch equation describes the relationship between pH and the ratio, but the ratio is
actively regulated by lungs and kidneys, not solely determined by the equation.
D - The law of mass action describes equilibrium conditions but does not account for active regulatory
mechanisms that maintain pH.
Reference: Sherwood, L. (2026). Human Physiology: From Cells to Systems, 10th Ed., Ch. 13: Acid-Base Balance.
Q3. A patient with a traumatic brain injury has a Glasgow Coma Scale (GCS) score of 9. Which of the
following nursing interventions is most appropriate for this patient?
A. Apply bilateral wrist restraints to prevent self-extubation
B. Elevate the head of the bed to 30 degrees and maintain neutral head alignment
Page 3
, C. Administer intravenous hypertonic saline at a rate of 500 mL over 1 hour
D. Perform a lumbar puncture to measure intracranial pressure
Correct Answer: B. Elevate the head of the bed to 30 degrees and maintain neutral head alignment
Rationale: Elevating the head of the bed to 30 degrees with neutral head alignment promotes venous drainage from the brain,
reducing intracranial pressure (ICP). A GCS of 9 indicates moderate brain injury with potential for increased ICP. Option A is
incorrect because restraints can increase agitation and ICP. Option C is incorrect because hypertonic saline is typically given
as a bolus for acute ICP elevation, not at a rapid rate without monitoring; 500 mL over 1 hour is too fast and could cause
volume overload. Option D is incorrect because lumbar puncture is contraindicated in patients with suspected increased ICP
due to risk of herniation.
Why Wrong:
A - Restraints can increase agitation and ICP; alternative sedation and monitoring should be used.
C - Hypertonic saline is usually given as a small bolus (e.g., 30-60 mL) for ICP crises; 500 mL over 1 hour is excessive
and dangerous.
D - Lumbar puncture is contraindicated when increased ICP is suspected due to risk of brain herniation.
Reference: Urden, L.D., Stacy, K.M., & Lough, M.E. (2026). Critical Care Nursing: Diagnosis and Management, 9th Ed., Ch.
21: Traumatic Brain Injury.
Q4. A researcher is analyzing a set of data from a clinical trial. The data are normally distributed with a
mean of 100 and a standard deviation of 15. If a participant scores 130, what is the approximate percentile
rank of that score?
A. 84th percentile
B. 95th percentile
C. 97.5th percentile
D. 99.9th percentile
Correct Answer: C. 97.5th percentile
Rationale: A score of 130 is 2 standard deviations above the mean (z = 2). In a normal distribution, approximately
95% of data falls within 2 standard deviations (z = ±2), meaning 2.5% is above z=2 and 2.5% below z=-2. Thus,
the percentile rank for z=2 is 97.5th percentile (100% - 2.5%). Option A (84th) corresponds to z=1. Option B
(95th) is for z=1.96 (approximately). Option D (99.9th) is for z=3.
Why Wrong:
A - 84th percentile corresponds to 1 standard deviation above the mean (z=1), not 2.
B - 95th percentile is approximately z=1.96, not exactly 2 standard deviations.
D - 99.9th percentile corresponds to about 3 standard deviations above the mean.
Reference: Pagano, M., & Gauvreau, K. (2026). Principles of Biostatistics, 3rd Ed., Ch. 5: The Normal
Distribution.
Q5. Which of the following sentences contains a dangling modifier?
A. Having finished the exam, the student left the room.
B. Walking through the park, the trees were beautiful.
C. To improve her score, she studied every night.
D. While cooking, the pot boiled over.
Correct Answer: B. Walking through the park, the trees were beautiful.
Rationale: A dangling modifier occurs when the subject of the modifier is not clearly stated in the sentence. In
option B, 'Walking through the park' is a participial phrase that logically should modify a person, but the subject of
the sentence is 'the trees,' which cannot walk. Option A has 'the student' as the subject who finished the exam.
Option C has 'she' as the implied subject. Option D has 'the pot' as the subject, but 'while cooking' implies a person
;
however, this is a common ellipsis and often accepted, but strictly speaking it is a dangling modifier. However,
option B is the clearest example of a dangling modifier.
Page 4
