FUNDAMENTALS OF ANATOMY AND
PHYSIOLOGY
12TH EDITION
• AUTHOR(S)FREDERIC H. MARTINI;
JUDI L. NATH; EDWIN F.
BARTHOLOMEW
TEST BANK
Question 1
Reference:
Ch. 1 — Levels of Organization — Structural Hierarchy
Question:
A researcher is studying how a mutation alters the shape of a
membrane protein, which then disrupts sodium movement
across a cell membrane and ultimately affects heart rhythm.
This scenario illustrates how changes at one level of
,organization can influence higher levels. At which level did the
original structural change occur?
A. Cellular level
B. Molecular level
C. Tissue level
D. Organ level
Correct Answer: B
Rationale:
Correct: The mutation alters the structure of a membrane
protein, which exists at the molecular level. Molecular structure
determines protein function, which in turn affects cellular
processes like ion transport. This demonstrates how molecular
alterations cascade upward to influence organ function and
whole-body physiology.
Incorrect:
A. Cellular level — Ion movement occurs at the cellular level,
but the initial defect was in a protein molecule.
C. Tissue level — Tissues are groups of similar cells; the
mutation precedes this level.
D. Organ level — The heart is affected later, not where the
change originated.
Teaching Point:
Molecular structure underlies function at all higher biological
levels.
,Citation:
Martini, F. H., Nath, J. L., & Bartholomew, E. F. (2024).
Fundamentals of Anatomy and Physiology (12th ed.). Ch. 1.
Question 2
Reference:
Ch. 1 — Organ Systems — Functional Integration
Question:
During exercise, breathing rate increases to supply more
oxygen, while the cardiovascular system transports that oxygen
to active muscles. This coordination illustrates system-level
integration. Which concept best explains why both systems
must respond together?
A. Structural compartmentalization
B. Functional interdependence
C. Anatomical symmetry
D. Regional specialization
Correct Answer: B
Rationale:
Correct: Functional interdependence means organ systems rely
on one another to maintain homeostasis. The respiratory
system provides oxygen, while the cardiovascular system
distributes it. Without coordinated responses, tissue oxygen
levels would fall, disrupting cellular metabolism.
, Incorrect:
A. Structural compartmentalization — Refers to physical
separation, not cooperative function.
C. Anatomical symmetry — Body symmetry does not explain
physiological coordination.
D. Regional specialization — Refers to anatomical areas, not
system integration.
Teaching Point:
Organ systems maintain homeostasis through coordinated
functional interdependence.
Citation: Martini et al., 12th ed., Ch. 1.
Question 3
Reference:
Ch. 1 — Homeostasis — Dynamic Equilibrium
Question:
A student argues that homeostasis means “keeping internal
conditions constant.” However, body temperature normally
fluctuates slightly during the day. Which concept best corrects
the student’s misunderstanding?
A. Positive feedback
B. Dynamic equilibrium
C. Structural organization
D. Anatomical variation
PHYSIOLOGY
12TH EDITION
• AUTHOR(S)FREDERIC H. MARTINI;
JUDI L. NATH; EDWIN F.
BARTHOLOMEW
TEST BANK
Question 1
Reference:
Ch. 1 — Levels of Organization — Structural Hierarchy
Question:
A researcher is studying how a mutation alters the shape of a
membrane protein, which then disrupts sodium movement
across a cell membrane and ultimately affects heart rhythm.
This scenario illustrates how changes at one level of
,organization can influence higher levels. At which level did the
original structural change occur?
A. Cellular level
B. Molecular level
C. Tissue level
D. Organ level
Correct Answer: B
Rationale:
Correct: The mutation alters the structure of a membrane
protein, which exists at the molecular level. Molecular structure
determines protein function, which in turn affects cellular
processes like ion transport. This demonstrates how molecular
alterations cascade upward to influence organ function and
whole-body physiology.
Incorrect:
A. Cellular level — Ion movement occurs at the cellular level,
but the initial defect was in a protein molecule.
C. Tissue level — Tissues are groups of similar cells; the
mutation precedes this level.
D. Organ level — The heart is affected later, not where the
change originated.
Teaching Point:
Molecular structure underlies function at all higher biological
levels.
,Citation:
Martini, F. H., Nath, J. L., & Bartholomew, E. F. (2024).
Fundamentals of Anatomy and Physiology (12th ed.). Ch. 1.
Question 2
Reference:
Ch. 1 — Organ Systems — Functional Integration
Question:
During exercise, breathing rate increases to supply more
oxygen, while the cardiovascular system transports that oxygen
to active muscles. This coordination illustrates system-level
integration. Which concept best explains why both systems
must respond together?
A. Structural compartmentalization
B. Functional interdependence
C. Anatomical symmetry
D. Regional specialization
Correct Answer: B
Rationale:
Correct: Functional interdependence means organ systems rely
on one another to maintain homeostasis. The respiratory
system provides oxygen, while the cardiovascular system
distributes it. Without coordinated responses, tissue oxygen
levels would fall, disrupting cellular metabolism.
, Incorrect:
A. Structural compartmentalization — Refers to physical
separation, not cooperative function.
C. Anatomical symmetry — Body symmetry does not explain
physiological coordination.
D. Regional specialization — Refers to anatomical areas, not
system integration.
Teaching Point:
Organ systems maintain homeostasis through coordinated
functional interdependence.
Citation: Martini et al., 12th ed., Ch. 1.
Question 3
Reference:
Ch. 1 — Homeostasis — Dynamic Equilibrium
Question:
A student argues that homeostasis means “keeping internal
conditions constant.” However, body temperature normally
fluctuates slightly during the day. Which concept best corrects
the student’s misunderstanding?
A. Positive feedback
B. Dynamic equilibrium
C. Structural organization
D. Anatomical variation
