ESSENTIALS OF ANATOMY AND
PHYSIOLOGY
8TH EDITION
• AUTHOR(S)VALERIE C. SCANLON;
TINA SANDERS
TEST BANK
1.
Reference: Ch. 1 — Levels of Organization — Cellular to Organ
System Integration
Stem: A nurse explains why a skin graft failed to revascularize.
Which explanation best uses levels-of-organization reasoning?
A. “The graft failed because the epidermis has too many cells.”
B. “The graft lacked immediate integration with local blood
vessels, preventing tissue-level oxygen delivery.”
C. “The graft was placed in the wrong anatomical plane.”
D. “The graft failed because of a genetic defect in the grafted
cells.”
Correct Answer: B
Rationale — Correct: Scanlon & Sanders emphasize that tissues
,and organs require vascular integration for oxygen and nutrient
delivery; without revascularization, the tissue cannot sustain
cellular metabolism.
Rationale — Incorrect:
A. Cell count alone doesn’t explain failure; functional perfusion
at tissue/organ level is critical.
C. Wrong plane may affect mechanics but does not directly
explain lack of blood supply.
D. A genetic defect is possible but less likely than immediate
perfusion failure in an acute graft setting.
Teaching Point: Tissue survival depends on timely vascular
integration to meet cellular metabolic needs.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
2.
Reference: Ch. 1 — Metabolism and Homeostasis — Negative
Feedback Mechanisms
Stem: A post-op patient develops hypothermia (core
temperature 34°C). Which physiological response best
illustrates negative feedback restoring homeostasis?
A. Shivering increases skeletal muscle activity to generate heat.
B. Vasodilation of cutaneous vessels increases heat loss.
C. Decreased hypothalamic set point lowers required
temperature.
D. Increased sweating cools the body.
,Correct Answer: A
Rationale — Correct: Scanlon & Sanders describe negative
feedback: effectors (shivering) are activated to oppose a change
(low temperature) and restore set point via increased heat
production.
Rationale — Incorrect:
B. Vasodilation would increase heat loss, worsening
hypothermia.
C. Lowering the set point would accept lower temperature; not
typical acute response.
D. Sweating increases heat loss and is inappropriate during
hypothermia.
Teaching Point: Negative feedback uses effectors (e.g.,
shivering) to oppose deviations from the set point.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
3.
Reference: Ch. 1 — Levels of Organization — Cellular Function
and Tissue Cooperation
Stem: A nurse observes muscle weakness in a patient with
prolonged hypoxia. Which mechanism best links cellular-level
failure to the organ-level symptom?
A. Hypoxia causes increased ATP production, improving
contraction.
B. Decreased ATP impairs myosin–actin cross-bridge cycling,
, reducing force generation.
C. Hypoxia enhances neuromuscular junction transmission,
increasing strength.
D. Hypoxia causes immediate cell proliferation to compensate.
Correct Answer: B
Rationale — Correct: Scanlon & Sanders explain that ATP
depletion from hypoxia disrupts cellular processes—here, ATP is
required for cross-bridge cycling in muscle, so decreased ATP
reduces contractility.
Rationale — Incorrect:
A. Hypoxia reduces ATP production, not increases it.
C. Hypoxia typically impairs, not enhances, neuromuscular
transmission.
D. Cell proliferation is not an immediate compensatory
response to acute hypoxia.
Teaching Point: Adequate ATP is essential for muscle cross-
bridge cycling and force generation.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
4.
Reference: Ch. 1 — Metabolism and Homeostasis — Set Points
and Regulatory Centers
Stem: A patient with sepsis exhibits a high fever despite
antipyretics. Which homeostasis concept explains persistent
fever?
PHYSIOLOGY
8TH EDITION
• AUTHOR(S)VALERIE C. SCANLON;
TINA SANDERS
TEST BANK
1.
Reference: Ch. 1 — Levels of Organization — Cellular to Organ
System Integration
Stem: A nurse explains why a skin graft failed to revascularize.
Which explanation best uses levels-of-organization reasoning?
A. “The graft failed because the epidermis has too many cells.”
B. “The graft lacked immediate integration with local blood
vessels, preventing tissue-level oxygen delivery.”
C. “The graft was placed in the wrong anatomical plane.”
D. “The graft failed because of a genetic defect in the grafted
cells.”
Correct Answer: B
Rationale — Correct: Scanlon & Sanders emphasize that tissues
,and organs require vascular integration for oxygen and nutrient
delivery; without revascularization, the tissue cannot sustain
cellular metabolism.
Rationale — Incorrect:
A. Cell count alone doesn’t explain failure; functional perfusion
at tissue/organ level is critical.
C. Wrong plane may affect mechanics but does not directly
explain lack of blood supply.
D. A genetic defect is possible but less likely than immediate
perfusion failure in an acute graft setting.
Teaching Point: Tissue survival depends on timely vascular
integration to meet cellular metabolic needs.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
2.
Reference: Ch. 1 — Metabolism and Homeostasis — Negative
Feedback Mechanisms
Stem: A post-op patient develops hypothermia (core
temperature 34°C). Which physiological response best
illustrates negative feedback restoring homeostasis?
A. Shivering increases skeletal muscle activity to generate heat.
B. Vasodilation of cutaneous vessels increases heat loss.
C. Decreased hypothalamic set point lowers required
temperature.
D. Increased sweating cools the body.
,Correct Answer: A
Rationale — Correct: Scanlon & Sanders describe negative
feedback: effectors (shivering) are activated to oppose a change
(low temperature) and restore set point via increased heat
production.
Rationale — Incorrect:
B. Vasodilation would increase heat loss, worsening
hypothermia.
C. Lowering the set point would accept lower temperature; not
typical acute response.
D. Sweating increases heat loss and is inappropriate during
hypothermia.
Teaching Point: Negative feedback uses effectors (e.g.,
shivering) to oppose deviations from the set point.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
3.
Reference: Ch. 1 — Levels of Organization — Cellular Function
and Tissue Cooperation
Stem: A nurse observes muscle weakness in a patient with
prolonged hypoxia. Which mechanism best links cellular-level
failure to the organ-level symptom?
A. Hypoxia causes increased ATP production, improving
contraction.
B. Decreased ATP impairs myosin–actin cross-bridge cycling,
, reducing force generation.
C. Hypoxia enhances neuromuscular junction transmission,
increasing strength.
D. Hypoxia causes immediate cell proliferation to compensate.
Correct Answer: B
Rationale — Correct: Scanlon & Sanders explain that ATP
depletion from hypoxia disrupts cellular processes—here, ATP is
required for cross-bridge cycling in muscle, so decreased ATP
reduces contractility.
Rationale — Incorrect:
A. Hypoxia reduces ATP production, not increases it.
C. Hypoxia typically impairs, not enhances, neuromuscular
transmission.
D. Cell proliferation is not an immediate compensatory
response to acute hypoxia.
Teaching Point: Adequate ATP is essential for muscle cross-
bridge cycling and force generation.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
4.
Reference: Ch. 1 — Metabolism and Homeostasis — Set Points
and Regulatory Centers
Stem: A patient with sepsis exhibits a high fever despite
antipyretics. Which homeostasis concept explains persistent
fever?
