HUMAN ANATOMY &
PHYSIOLOGY 11TH EDITION TEST
BANK BY ELAINE N. MARIEB &
LATEST MOCK PRACTICE SET
250 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
HUMAN ANATOMY & PHYSIOLOGY 11TH EDITION TEST BANK BY ELAINE N. MARIEB & KATJA HOEHN
ALL CHAPTERS COMPLETE EXAM PREP VERIFIED Q&A WITH EXPERT RATIONALES ISBN
9780134580999 LATEST UPDATE. It contains 250 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 250 Questions
Foundations - Application - Human Anatomy & Physiology 11th Edition BANK BY Elaine N Marieb & Katja
Hoehn ALL Chapters Complete PREP Q&a WITH Expert Rationales ISBN 9780134580999 Update Human
Anatomy & Physiology Advanced Undergraduate YEAR 3-4 / Graduate
All answers with rationales
,Table of Contents
Section A - Organization OF THE Section B - Cells AND Tissues
Human BODY Questions 64 to 126
Questions 1 to 63
Section C - Integumentary System Section D - Skeletal System AND
Questions 127 to 189 Joints
Questions 190 to 250
,Section A - Organization OF THE Human BODY
Q1.
A mutation in the gene encoding the -subunit of the voltage-gated sodium channel
(Nav1.4) in skeletal muscle results in impaired inactivation. Which of the following
electrophysiological changes is most likely to be observed in the affected muscle fibers?
A. Prolonged action potential duration due to B. Decreased amplitude of the action
delayed repolarization potential due to reduced sodium influx
C. Increased threshold for action potential D. Complete absence of action potentials
generation due to hyperpolarization due to channel non-conductance
Correct: A - Prolonged action potential duration due to delayed repolarization
Rationale:Impaired inactivation of Nav1.4 prolongs sodium influx during the action potential,
delaying repolarization and prolonging the action potential duration. Reduced amplitude (B)
would occur with decreased conductance, not impaired inactivation. Increased threshold (C)
is associated with hyperpolarization, not Na+ channel inactivation defects. Complete absence
(D) would occur with non-conducting channels, not inactivation defects.
Q2.
A researcher isolates a peptide hormone that binds to a G-protein-coupled receptor and
activates phospholipase C. Which of the following second messenger cascades will be
directly initiated?
A. Production of cAMP and activation of B. Activation of receptor tyrosine kinase and
protein kinase A MAP kinase pathway
C. Cleavage of phosphatidylinositol D. Opening of ligand-gated ion channels
4,5-bisphosphate into IP3 and DAG and calcium influx
Correct: C - Cleavage of phosphatidylinositol 4,5-bisphosphate into IP3 and DAG
Rationale:Phospholipase C cleaves PIP2 into IP3 and DAG. IP3 releases Ca2+ from
intracellular stores, and DAG activates PKC. cAMP production (A) is mediated by adenylyl
cyclase, not PLC. RTK activation (B) is independent of GPCRs. Ion channel opening (D) is
not directly initiated by PLC activation.
Q3.
During exercise, sympathetic stimulation causes vasoconstriction in the renal and
splanchnic circulations but vasodilation in skeletal muscle arterioles. This differential
response is primarily due to:
A. Differences in the density of 2-adrenergic B. Higher basal nitric oxide production in
receptors on vascular smooth muscle skeletal muscle
Page 3
, Section A - Organization OF THE Human BODY
C. Local accumulation of metabolic D. Heterogeneity in 1-adrenergic receptor
byproducts overriding sympathetic tone subtypes across vascular beds
Correct: C - Local accumulation of metabolic byproducts overriding sympathetic tone
Rationale:During exercise, local metabolic factors (adenosine, K+, H+, lactate) accumulate in
active skeletal muscle, causing vasodilation that overrides sympathetic vasoconstriction. This
is termed functional sympatholysis. While 2 receptors (A) mediate vasodilation, the primary
mechanism is metabolic override. Nitric oxide (B) contributes but is not the primary reason for
the differential response. Receptor subtypes (D) are not the key factor.
Q4.
A patient presents with metabolic acidosis and an elevated anion gap. Laboratory results
show elevated serum lactate and decreased bicarbonate. Which of the following is the
most likely underlying cause?
A. Type A lactic acidosis due to tissue B. Type B lactic acidosis due to metformin
hypoperfusion accumulation
C. Renal tubular acidosis due to impaired D. Diabetic ketoacidosis due to insulin
hydrogen ion secretion deficiency
Correct: A - Type A lactic acidosis due to tissue hypoperfusion
Rationale:Elevated lactate and metabolic acidosis with elevated anion gap suggest lactic
acidosis. Type A lactic acidosis is due to tissue hypoperfusion (e.g., shock, sepsis) causing
anaerobic metabolism. Type B (B) involves toxins/drugs but is less common. Renal tubular
acidosis (C) usually presents with non-anion gap acidosis. DKA (D) would show ketones, not
primarily lactate.
Q5.
Which of the following best describes the role of the Na+/K+-ATPase in maintaining the
resting membrane potential of a typical neuron?
A. It directly generates the negative interior B. It establishes concentration gradients for
by pumping three Na+ out for every two K+ Na+ and K+ that are then used by leak
in channels to create the resting potential
C. It hyperpolarizes the cell by actively D. It depolarizes the cell by generating a net
transporting chloride ions into the cytoplasm outward current of positive charge
Correct: B - It establishes concentration gradients for Na+ and K+ that are then used by
leak channels to create the resting potential
Page 4
PHYSIOLOGY 11TH EDITION TEST
BANK BY ELAINE N. MARIEB &
LATEST MOCK PRACTICE SET
250 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
HUMAN ANATOMY & PHYSIOLOGY 11TH EDITION TEST BANK BY ELAINE N. MARIEB & KATJA HOEHN
ALL CHAPTERS COMPLETE EXAM PREP VERIFIED Q&A WITH EXPERT RATIONALES ISBN
9780134580999 LATEST UPDATE. It contains 250 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 250 Questions
Foundations - Application - Human Anatomy & Physiology 11th Edition BANK BY Elaine N Marieb & Katja
Hoehn ALL Chapters Complete PREP Q&a WITH Expert Rationales ISBN 9780134580999 Update Human
Anatomy & Physiology Advanced Undergraduate YEAR 3-4 / Graduate
All answers with rationales
,Table of Contents
Section A - Organization OF THE Section B - Cells AND Tissues
Human BODY Questions 64 to 126
Questions 1 to 63
Section C - Integumentary System Section D - Skeletal System AND
Questions 127 to 189 Joints
Questions 190 to 250
,Section A - Organization OF THE Human BODY
Q1.
A mutation in the gene encoding the -subunit of the voltage-gated sodium channel
(Nav1.4) in skeletal muscle results in impaired inactivation. Which of the following
electrophysiological changes is most likely to be observed in the affected muscle fibers?
A. Prolonged action potential duration due to B. Decreased amplitude of the action
delayed repolarization potential due to reduced sodium influx
C. Increased threshold for action potential D. Complete absence of action potentials
generation due to hyperpolarization due to channel non-conductance
Correct: A - Prolonged action potential duration due to delayed repolarization
Rationale:Impaired inactivation of Nav1.4 prolongs sodium influx during the action potential,
delaying repolarization and prolonging the action potential duration. Reduced amplitude (B)
would occur with decreased conductance, not impaired inactivation. Increased threshold (C)
is associated with hyperpolarization, not Na+ channel inactivation defects. Complete absence
(D) would occur with non-conducting channels, not inactivation defects.
Q2.
A researcher isolates a peptide hormone that binds to a G-protein-coupled receptor and
activates phospholipase C. Which of the following second messenger cascades will be
directly initiated?
A. Production of cAMP and activation of B. Activation of receptor tyrosine kinase and
protein kinase A MAP kinase pathway
C. Cleavage of phosphatidylinositol D. Opening of ligand-gated ion channels
4,5-bisphosphate into IP3 and DAG and calcium influx
Correct: C - Cleavage of phosphatidylinositol 4,5-bisphosphate into IP3 and DAG
Rationale:Phospholipase C cleaves PIP2 into IP3 and DAG. IP3 releases Ca2+ from
intracellular stores, and DAG activates PKC. cAMP production (A) is mediated by adenylyl
cyclase, not PLC. RTK activation (B) is independent of GPCRs. Ion channel opening (D) is
not directly initiated by PLC activation.
Q3.
During exercise, sympathetic stimulation causes vasoconstriction in the renal and
splanchnic circulations but vasodilation in skeletal muscle arterioles. This differential
response is primarily due to:
A. Differences in the density of 2-adrenergic B. Higher basal nitric oxide production in
receptors on vascular smooth muscle skeletal muscle
Page 3
, Section A - Organization OF THE Human BODY
C. Local accumulation of metabolic D. Heterogeneity in 1-adrenergic receptor
byproducts overriding sympathetic tone subtypes across vascular beds
Correct: C - Local accumulation of metabolic byproducts overriding sympathetic tone
Rationale:During exercise, local metabolic factors (adenosine, K+, H+, lactate) accumulate in
active skeletal muscle, causing vasodilation that overrides sympathetic vasoconstriction. This
is termed functional sympatholysis. While 2 receptors (A) mediate vasodilation, the primary
mechanism is metabolic override. Nitric oxide (B) contributes but is not the primary reason for
the differential response. Receptor subtypes (D) are not the key factor.
Q4.
A patient presents with metabolic acidosis and an elevated anion gap. Laboratory results
show elevated serum lactate and decreased bicarbonate. Which of the following is the
most likely underlying cause?
A. Type A lactic acidosis due to tissue B. Type B lactic acidosis due to metformin
hypoperfusion accumulation
C. Renal tubular acidosis due to impaired D. Diabetic ketoacidosis due to insulin
hydrogen ion secretion deficiency
Correct: A - Type A lactic acidosis due to tissue hypoperfusion
Rationale:Elevated lactate and metabolic acidosis with elevated anion gap suggest lactic
acidosis. Type A lactic acidosis is due to tissue hypoperfusion (e.g., shock, sepsis) causing
anaerobic metabolism. Type B (B) involves toxins/drugs but is less common. Renal tubular
acidosis (C) usually presents with non-anion gap acidosis. DKA (D) would show ketones, not
primarily lactate.
Q5.
Which of the following best describes the role of the Na+/K+-ATPase in maintaining the
resting membrane potential of a typical neuron?
A. It directly generates the negative interior B. It establishes concentration gradients for
by pumping three Na+ out for every two K+ Na+ and K+ that are then used by leak
in channels to create the resting potential
C. It hyperpolarizes the cell by actively D. It depolarizes the cell by generating a net
transporting chloride ions into the cytoplasm outward current of positive charge
Correct: B - It establishes concentration gradients for Na+ and K+ that are then used by
leak channels to create the resting potential
Page 4
