MARIEB HUMAN ANATOMY &
PHYSIOLOGY
12TH EDITION
AUTHOR(S)KATJA HOEHN;
LAWRENCE W. HAYNES;
MATTHEW A. ABBOTT
TEST BANK
1. Structure determines function
Reference: Chapter 1 — Form (Anatomy) Determines Function
(Physiology)
Stem: A student examines a thin-walled sac in the body that
allows rapid gas exchange. The wall is only one cell thick, and
,the surface area is large relative to volume. Which conclusion
best explains why this structure is effective?
A. The thick wall protects the tissue from pressure changes
B. The simple design maximizes exchange across the
membrane
C. The large wall thickness slows diffusion to maintain stability
D. The small surface area reduces the rate of transport
Correct Answer: B
Rationale:
B is correct. A thin wall and large surface area are
structural features that support rapid diffusion and exchange.
This is a classic example of anatomy supporting physiology.
A is incorrect because a thick wall would reduce exchange
efficiency.
C is incorrect because diffusion is faster when the barrier is
thinner, not thicker.
D is incorrect because small surface area would decrease
transport, not improve it.
Teaching Point: Thin barriers and large surface area promote
efficient exchange.
Citation: Hoehn, K., Haynes, L. W., & Abbott, M. A. (2025).
Marieb Human Anatomy & Physiology (12th ed.). Chapter 1:
Form (anatomy) determines function (physiology).
,2. Structure-function in the heart
Reference: Chapter 1 — Complementarity of Structure and
Function
Stem: A patient has a damaged heart valve that no longer
closes tightly. Blood now leaks backward during contraction.
Which principle best explains why this injury alters circulation?
A. The valve’s shape is unrelated to blood flow
B. Structure and function are independent in the body
C. The valve’s normal form ensures one-way flow
D. Blood can flow in any direction without effect
Correct Answer: C
Rationale:
C is correct. Heart valves are structured to prevent
backflow, so when their shape is altered, function is impaired.
A is incorrect because valve shape directly affects blood
flow.
B is incorrect because structure and function are closely
linked in anatomy.
D is incorrect because unidirectional flow is essential for
normal circulation.
, Teaching Point: Anatomical form determines directional
function.
Citation: Hoehn, K., Haynes, L. W., & Abbott, M. A. (2025).
Marieb Human Anatomy & Physiology (12th ed.). Chapter 1:
Complementarity of structure and function.
3. Levels of organization
Reference: Chapter 1 — The Body’s Organization Ranges from
Atoms to the Entire Organism
Stem: A professor asks students to arrange these structures
from simplest to most complex: glucose, mitochondrion,
cardiac muscle cell, heart, cardiovascular system. Which
sequence is correct?
A. Glucose → mitochondrion → cardiac muscle cell → heart →
cardiovascular system
B. Mitochondrion → glucose → cardiac muscle cell →
cardiovascular system → heart
C. Glucose → cardiac muscle cell → mitochondrion → heart →
cardiovascular system
D. Cardiac muscle cell → mitochondrion → glucose → heart →
cardiovascular system
Correct Answer: A
PHYSIOLOGY
12TH EDITION
AUTHOR(S)KATJA HOEHN;
LAWRENCE W. HAYNES;
MATTHEW A. ABBOTT
TEST BANK
1. Structure determines function
Reference: Chapter 1 — Form (Anatomy) Determines Function
(Physiology)
Stem: A student examines a thin-walled sac in the body that
allows rapid gas exchange. The wall is only one cell thick, and
,the surface area is large relative to volume. Which conclusion
best explains why this structure is effective?
A. The thick wall protects the tissue from pressure changes
B. The simple design maximizes exchange across the
membrane
C. The large wall thickness slows diffusion to maintain stability
D. The small surface area reduces the rate of transport
Correct Answer: B
Rationale:
B is correct. A thin wall and large surface area are
structural features that support rapid diffusion and exchange.
This is a classic example of anatomy supporting physiology.
A is incorrect because a thick wall would reduce exchange
efficiency.
C is incorrect because diffusion is faster when the barrier is
thinner, not thicker.
D is incorrect because small surface area would decrease
transport, not improve it.
Teaching Point: Thin barriers and large surface area promote
efficient exchange.
Citation: Hoehn, K., Haynes, L. W., & Abbott, M. A. (2025).
Marieb Human Anatomy & Physiology (12th ed.). Chapter 1:
Form (anatomy) determines function (physiology).
,2. Structure-function in the heart
Reference: Chapter 1 — Complementarity of Structure and
Function
Stem: A patient has a damaged heart valve that no longer
closes tightly. Blood now leaks backward during contraction.
Which principle best explains why this injury alters circulation?
A. The valve’s shape is unrelated to blood flow
B. Structure and function are independent in the body
C. The valve’s normal form ensures one-way flow
D. Blood can flow in any direction without effect
Correct Answer: C
Rationale:
C is correct. Heart valves are structured to prevent
backflow, so when their shape is altered, function is impaired.
A is incorrect because valve shape directly affects blood
flow.
B is incorrect because structure and function are closely
linked in anatomy.
D is incorrect because unidirectional flow is essential for
normal circulation.
, Teaching Point: Anatomical form determines directional
function.
Citation: Hoehn, K., Haynes, L. W., & Abbott, M. A. (2025).
Marieb Human Anatomy & Physiology (12th ed.). Chapter 1:
Complementarity of structure and function.
3. Levels of organization
Reference: Chapter 1 — The Body’s Organization Ranges from
Atoms to the Entire Organism
Stem: A professor asks students to arrange these structures
from simplest to most complex: glucose, mitochondrion,
cardiac muscle cell, heart, cardiovascular system. Which
sequence is correct?
A. Glucose → mitochondrion → cardiac muscle cell → heart →
cardiovascular system
B. Mitochondrion → glucose → cardiac muscle cell →
cardiovascular system → heart
C. Glucose → cardiac muscle cell → mitochondrion → heart →
cardiovascular system
D. Cardiac muscle cell → mitochondrion → glucose → heart →
cardiovascular system
Correct Answer: A
