PHYSIOLOGY
8TH EDITION
• AUTHOR(S)VALERIE C. SCANLON;
TINA SANDERS
TEST BANK
Question 1
Reference: Ch. 1 — Levels of Organization
Stem: A post-op patient’s wound is not healing despite good
nutritional intake. The nurse recalls that tissue repair requires
coordination across levels of organization. Which explanation
best describes why a localized wound might still heal poorly?
Options:
A. The organ level is unaffected, so healing depends only on
systemic hormones.
B. Cellular dysfunction (e.g., impaired fibroblasts) prevents
effective tissue-level repair.
C. Whole-organism metabolism is irrelevant to local tissue
repair.
,D. The chemical level must adapt before cells can participate in
repair.
Correct Answer: B
Rationales:
• Correct (B): Tissue repair depends on functioning cells
(fibroblasts, endothelial cells). If cells at the cellular level
are dysfunctional, the tissue (and thus organ) cannot
regenerate or repair adequately. This aligns with levels-of-
organization linkage in Scanlon & Sanders.
• Incorrect (A): Organ-level changes matter, but healing is
not only organ-dependent; cellular activity is central.
• Incorrect (C): Systemic metabolism influences healing
(energy, protein), so it is relevant.
• Incorrect (D): Chemical processes underpin cell function,
but direct cellular dysfunction is the more proximate cause
of poor healing.
Teaching Point: Tissue repair requires intact cellular
function within organized tissue layers.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
Question 2
Reference: Ch. 1 — Levels of Organization
Stem: A nurse explains to a patient how a medication that alters
cellular ion channels can change organ-level function. Which
,statement best links the levels of organization?
Options:
A. Ion-channel changes at chemical level produce whole-body
structural changes immediately.
B. Altering cellular ion channels can change cell excitability,
affecting tissue and organ function.
C. Organ systems function independently of cellular membrane
properties.
D. Cellular ion channels only affect isolated cells, not tissues or
organs.
Correct Answer: B
Rationales:
• Correct (B): Ion channels in cell membranes determine
excitability; altered excitability changes tissue activity (e.g.,
muscle contraction), thereby impacting organ function—
demonstrating level integration.
• Incorrect (A): Chemical/ion changes can affect organs, but
not instantly produce whole-body structural changes.
• Incorrect (C): Organ function depends on cellular
properties; they are not independent.
• Incorrect (D): Cellular changes scale up to tissue and organ
levels when many cells are affected.
Teaching Point: Cellular membrane function (ion channels)
scales up to tissue and organ function.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
, Question 3
Reference: Ch. 1 — Metabolism and Homeostasis
Stem: A febrile patient shivers while receiving antipyretic
therapy. The nurse recognizes shivering increases heat
production. Which metabolic process most directly produces
the ATP that supports shivering?
Options:
A. Glycolysis and oxidative phosphorylation producing ATP in
mitochondria.
B. Protein translation in the ribosomes generating heat.
C. Passive diffusion of ions across membranes producing ATP.
D. Lipid storage in adipocytes converting to ATP without oxygen.
Correct Answer: A
Rationales:
• Correct (A): ATP used for muscle contraction during
shivering is primarily produced by glycolysis and oxidative
phosphorylation in mitochondria, per metabolic principles.
• Incorrect (B): Protein synthesis consumes ATP but is not
the primary ATP source for rapid shivering.
• Incorrect (C): Passive ion diffusion does not generate ATP;
ion pumps consume ATP.
• Incorrect (D): Lipid oxidation yields ATP but requires
oxidative pathways; statement is inaccurate as written and
oxygen-dependent.