CHAMBERLAIN UNIVERSITY
BIOS-252 ANATOMY &
PHYSIOLOGY II EXAM 2026
148 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
CHAMBERLAIN UNIVERSITY BIOS-252 ANATOMY & PHYSIOLOGY II EXAM 2026. It contains 148 carefully
selected questions that reflect the most current exam content and testing strategies. Each question is
accompanied by a correct answer and a detailed rationale that explains the underlying pathophysiology,
pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 148 Questions
Foundations - Application - Chamberlain University Bios-252 Anatomy & Physiology II 2026 Human
Anatomy & Physiology II Bios-252 Undergraduate YEAR 2 Sophomore - Pre-nursing/health Sciences
All answers with rationales
,Table of Contents
Content Area Questions Key Topics
THE Cardiovascular System 1-25 Blood, Patient S, Primary, Likely, Phase
Blood
THE Cardiovascular System 26-50 Directly, Primary, Patient S, Likely, Pressure
THE Heart
THE Cardiovascular System 51-75 Directly, Primary, Hormone, Respiratory, System
Blood Vessels AND
Circulation
THE Lymphatic System AND 76-100 Responsible, Primarily, Directly, Cycle, Blood
Immunity
THE Respiratory System 101-125 Directly, Blood, Hormone, Describes, Pulmonary
THE Digestive System AND 126-148 Cycle, Event, Blood, Likely, Describes
Metabolism
TOTAL 148 All questions include answers and detailed rationales
,Section A - THE Cardiovascular System Blood
Q1.
A patient's ECG shows a prolonged PR interval and a normal QRS complex. Which of the
following best explains this finding?
A. Delayed conduction through the AV node B. Rapid conduction through the bundle of
His
C. Blocked conduction in the left bundle D. Enhanced conduction through the
branch Purkinje fibers
Correct: A - Delayed conduction through the AV node
Rationale:A prolonged PR interval indicates delayed conduction from the SA node to the
ventricles, typically due to slowed conduction through the AV node. The QRS complex
remains normal because ventricular depolarization is not directly affected. Rapid conduction
or bundle branch block would alter QRS morphology or duration.
Why the other answers are wrong:
B. Rapid conduction would shorten the PR interval, not prolong it.
C. Left bundle branch block would widen the QRS complex, not prolong the PR interval.
D. Enhanced Purkinje conduction would not affect the PR interval, which measures atrial to
ventricular conduction time.
Reference: Guyton & Hall, Textbook of Medical Physiology, 14th Ed., Ch. 11
Q2.
Which immunoglobulin class is primarily responsible for the allergic response and is
found in high concentrations in mucous membranes and tears?
A. IgG B. IgA
C. IgM D. IgE
Correct: D - IgE
Rationale:IgE binds to mast cells and basophils, triggering histamine release during allergic
reactions. While IgA is found in mucous membranes and secretions, it is not the primary
mediator of allergy. IgG is the most abundant in blood, and IgM is the first responder in
primary infections.
Why the other answers are wrong:
A. IgG is the most abundant antibody in blood and extracellular fluid, involved in secondary
immune responses.
B. IgA is found in secretions but does not mediate allergic responses.
C. IgM is the first antibody produced in a primary immune response and is a potent
Page 3
, Section A - THE Cardiovascular System Blood
agglutinator.
Reference: Marieb & Hoehn, Human Anatomy & Physiology, 11th Ed., Ch. 21
Q3.
During quiet expiration, which of the following best describes the primary mechanism?
A. Contraction of the diaphragm and B. Elastic recoil of the lungs and relaxation
external intercostals of inspiratory muscles
C. Active contraction of the abdominal D. Increased thoracic volume due to rib
muscles elevation
Correct: B - Elastic recoil of the lungs and relaxation of inspiratory muscles
Rationale:Quiet expiration is a passive process driven by the elastic recoil of the lungs and
chest wall as the diaphragm and external intercostals relax. Active muscle contraction is
involved in forced expiration. Increased thoracic volume occurs during inspiration, not
expiration.
Why the other answers are wrong:
A. Contraction of these muscles causes inspiration, not expiration.
C. Abdominal muscle contraction is used in forced expiration, not quiet expiration.
D. Rib elevation increases thoracic volume during inspiration.
Reference: Tortora & Derrickson, Principles of Anatomy and Physiology, 15th Ed., Ch. 23
Q4.
Which of the following is the primary site of nutrient absorption in the digestive tract?
A. Stomach B. Duodenum
C. Jejunum D. Ileum
Correct: C - Jejunum
Rationale:The jejunum is the primary site of nutrient absorption due to its large surface area
from villi and microvilli. While the duodenum and ileum also absorb nutrients, the jejunum is
most efficient for most macronutrients. The stomach mainly absorbs water, alcohol, and some
drugs.
Why the other answers are wrong:
A. The stomach primarily absorbs water, alcohol, and certain drugs, not the majority of
nutrients.
B. The duodenum is a major site for digestion and some absorption, but not the primary site.
D. The ileum absorbs bile salts, vitamin B12, and some electrolytes, but not the bulk of
nutrients.
Reference: Marieb & Hoehn, Human Anatomy & Physiology, 11th Ed., Ch. 23
Page 4
BIOS-252 ANATOMY &
PHYSIOLOGY II EXAM 2026
148 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
CHAMBERLAIN UNIVERSITY BIOS-252 ANATOMY & PHYSIOLOGY II EXAM 2026. It contains 148 carefully
selected questions that reflect the most current exam content and testing strategies. Each question is
accompanied by a correct answer and a detailed rationale that explains the underlying pathophysiology,
pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 148 Questions
Foundations - Application - Chamberlain University Bios-252 Anatomy & Physiology II 2026 Human
Anatomy & Physiology II Bios-252 Undergraduate YEAR 2 Sophomore - Pre-nursing/health Sciences
All answers with rationales
,Table of Contents
Content Area Questions Key Topics
THE Cardiovascular System 1-25 Blood, Patient S, Primary, Likely, Phase
Blood
THE Cardiovascular System 26-50 Directly, Primary, Patient S, Likely, Pressure
THE Heart
THE Cardiovascular System 51-75 Directly, Primary, Hormone, Respiratory, System
Blood Vessels AND
Circulation
THE Lymphatic System AND 76-100 Responsible, Primarily, Directly, Cycle, Blood
Immunity
THE Respiratory System 101-125 Directly, Blood, Hormone, Describes, Pulmonary
THE Digestive System AND 126-148 Cycle, Event, Blood, Likely, Describes
Metabolism
TOTAL 148 All questions include answers and detailed rationales
,Section A - THE Cardiovascular System Blood
Q1.
A patient's ECG shows a prolonged PR interval and a normal QRS complex. Which of the
following best explains this finding?
A. Delayed conduction through the AV node B. Rapid conduction through the bundle of
His
C. Blocked conduction in the left bundle D. Enhanced conduction through the
branch Purkinje fibers
Correct: A - Delayed conduction through the AV node
Rationale:A prolonged PR interval indicates delayed conduction from the SA node to the
ventricles, typically due to slowed conduction through the AV node. The QRS complex
remains normal because ventricular depolarization is not directly affected. Rapid conduction
or bundle branch block would alter QRS morphology or duration.
Why the other answers are wrong:
B. Rapid conduction would shorten the PR interval, not prolong it.
C. Left bundle branch block would widen the QRS complex, not prolong the PR interval.
D. Enhanced Purkinje conduction would not affect the PR interval, which measures atrial to
ventricular conduction time.
Reference: Guyton & Hall, Textbook of Medical Physiology, 14th Ed., Ch. 11
Q2.
Which immunoglobulin class is primarily responsible for the allergic response and is
found in high concentrations in mucous membranes and tears?
A. IgG B. IgA
C. IgM D. IgE
Correct: D - IgE
Rationale:IgE binds to mast cells and basophils, triggering histamine release during allergic
reactions. While IgA is found in mucous membranes and secretions, it is not the primary
mediator of allergy. IgG is the most abundant in blood, and IgM is the first responder in
primary infections.
Why the other answers are wrong:
A. IgG is the most abundant antibody in blood and extracellular fluid, involved in secondary
immune responses.
B. IgA is found in secretions but does not mediate allergic responses.
C. IgM is the first antibody produced in a primary immune response and is a potent
Page 3
, Section A - THE Cardiovascular System Blood
agglutinator.
Reference: Marieb & Hoehn, Human Anatomy & Physiology, 11th Ed., Ch. 21
Q3.
During quiet expiration, which of the following best describes the primary mechanism?
A. Contraction of the diaphragm and B. Elastic recoil of the lungs and relaxation
external intercostals of inspiratory muscles
C. Active contraction of the abdominal D. Increased thoracic volume due to rib
muscles elevation
Correct: B - Elastic recoil of the lungs and relaxation of inspiratory muscles
Rationale:Quiet expiration is a passive process driven by the elastic recoil of the lungs and
chest wall as the diaphragm and external intercostals relax. Active muscle contraction is
involved in forced expiration. Increased thoracic volume occurs during inspiration, not
expiration.
Why the other answers are wrong:
A. Contraction of these muscles causes inspiration, not expiration.
C. Abdominal muscle contraction is used in forced expiration, not quiet expiration.
D. Rib elevation increases thoracic volume during inspiration.
Reference: Tortora & Derrickson, Principles of Anatomy and Physiology, 15th Ed., Ch. 23
Q4.
Which of the following is the primary site of nutrient absorption in the digestive tract?
A. Stomach B. Duodenum
C. Jejunum D. Ileum
Correct: C - Jejunum
Rationale:The jejunum is the primary site of nutrient absorption due to its large surface area
from villi and microvilli. While the duodenum and ileum also absorb nutrients, the jejunum is
most efficient for most macronutrients. The stomach mainly absorbs water, alcohol, and some
drugs.
Why the other answers are wrong:
A. The stomach primarily absorbs water, alcohol, and certain drugs, not the majority of
nutrients.
B. The duodenum is a major site for digestion and some absorption, but not the primary site.
D. The ileum absorbs bile salts, vitamin B12, and some electrolytes, but not the bulk of
nutrients.
Reference: Marieb & Hoehn, Human Anatomy & Physiology, 11th Ed., Ch. 23
Page 4
