ESSENTIALS OF ANATOMY AND
PHYSIOLOGY
8TH EDITION
• AUTHOR(S)VALERIE C. SCANLON;
TINA SANDERS
TEST BANK
Q1
Reference: Ch. 1 — Levels of Organization
Stem: A postoperative patient is steadily losing blood into a
wound. Which level of organization explains why a small
capillary tear can cause systemic hypovolemia if bleeding
continues unchecked?
Options:
A. Cellular level — individual cell failure leads to whole-body
blood loss.
B. Tissue level — capillary network disruption reduces total
blood volume.
C. Organ level — failure of the heart causes systemic
hypovolemia.
,D. Chemical level — plasma proteins degrade causing blood to
leak out.
Correct Answer: B
Rationales:
• Correct (B): The tissue level (capillaries within vascular
tissue) links many cells into networks; disruption of many
capillaries in tissues can decrease circulating volume and
produce systemic hypovolemia.
• A: Single cell damage rarely produces rapid systemic blood
loss; bleeding is from multicellular vascular structures.
• C: Cardiac failure affects distribution and perfusion but
does not directly explain external blood loss from a wound.
• D: Chemical-level changes (plasma proteins) may affect
oncotic pressure but are not the primary cause of acute
external hemorrhage.
Teaching Point: Tissue-level vascular disruptions can
rapidly produce systemic volume loss.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
Q2
Reference: Ch. 1 — Levels of Organization
Stem: A nurse explains why intravenous antibiotics reach an
infected organ: which organizational concept best justifies how
a drug administered into the bloodstream reaches tissue cells?
,Options:
A. Organs operate independently of the circulatory system.
B. Systems level integration allows the circulatory system to
transport substances to tissues.
C. The chemical level alone determines drug distribution.
D. Tissues prevent substances from moving between systems.
Correct Answer: B
Rationales:
• Correct (B): The systems level (interaction of circulatory
and other systems) is responsible for transporting drugs
from the bloodstream to organs and cells.
• A: Organs are interdependent; they do not operate in
isolation from the circulatory system.
• C: Chemistry matters for drug behavior, but distribution
depends on system-level transport mechanisms.
• D: Tissues are permeable in regulated ways; they do not
universally block movement between systems.
Teaching Point: System-level integration (circulatory +
organ systems) enables drug delivery to tissues.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
Q3
Reference: Ch. 1 — Metabolism and Homeostasis
Stem: A febrile patient’s hypothalamic set point increases due
, to pyrogens. Which description best characterizes this change in
homeostasis?
Options:
A. A failure of negative feedback causing uncontrolled cooling.
B. A changed set point producing a regulated increase in body
temperature.
C. A metabolic collapse resulting in hypothermia.
D. Positive feedback driving continued fever without regulation.
Correct Answer: B
Rationales:
• Correct (B): Pyrogens alter the hypothalamic set point so
the body actively raises temperature (fever) via regulated
mechanisms—an adjusted, not failed, homeostatic
response.
• A: Negative feedback is still operative but around a higher
set point; it’s not a failure causing cooling.
• C: Metabolic collapse and hypothermia are inconsistent
with fever where temperature rises.
• D: Fever is mediated by an altered set point with feedback;
it’s not a classic positive-feedback loop.
Teaching Point: Fever reflects an increased hypothalamic
set point and a regulated rise in body temperature.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
PHYSIOLOGY
8TH EDITION
• AUTHOR(S)VALERIE C. SCANLON;
TINA SANDERS
TEST BANK
Q1
Reference: Ch. 1 — Levels of Organization
Stem: A postoperative patient is steadily losing blood into a
wound. Which level of organization explains why a small
capillary tear can cause systemic hypovolemia if bleeding
continues unchecked?
Options:
A. Cellular level — individual cell failure leads to whole-body
blood loss.
B. Tissue level — capillary network disruption reduces total
blood volume.
C. Organ level — failure of the heart causes systemic
hypovolemia.
,D. Chemical level — plasma proteins degrade causing blood to
leak out.
Correct Answer: B
Rationales:
• Correct (B): The tissue level (capillaries within vascular
tissue) links many cells into networks; disruption of many
capillaries in tissues can decrease circulating volume and
produce systemic hypovolemia.
• A: Single cell damage rarely produces rapid systemic blood
loss; bleeding is from multicellular vascular structures.
• C: Cardiac failure affects distribution and perfusion but
does not directly explain external blood loss from a wound.
• D: Chemical-level changes (plasma proteins) may affect
oncotic pressure but are not the primary cause of acute
external hemorrhage.
Teaching Point: Tissue-level vascular disruptions can
rapidly produce systemic volume loss.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
Q2
Reference: Ch. 1 — Levels of Organization
Stem: A nurse explains why intravenous antibiotics reach an
infected organ: which organizational concept best justifies how
a drug administered into the bloodstream reaches tissue cells?
,Options:
A. Organs operate independently of the circulatory system.
B. Systems level integration allows the circulatory system to
transport substances to tissues.
C. The chemical level alone determines drug distribution.
D. Tissues prevent substances from moving between systems.
Correct Answer: B
Rationales:
• Correct (B): The systems level (interaction of circulatory
and other systems) is responsible for transporting drugs
from the bloodstream to organs and cells.
• A: Organs are interdependent; they do not operate in
isolation from the circulatory system.
• C: Chemistry matters for drug behavior, but distribution
depends on system-level transport mechanisms.
• D: Tissues are permeable in regulated ways; they do not
universally block movement between systems.
Teaching Point: System-level integration (circulatory +
organ systems) enables drug delivery to tissues.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
Q3
Reference: Ch. 1 — Metabolism and Homeostasis
Stem: A febrile patient’s hypothalamic set point increases due
, to pyrogens. Which description best characterizes this change in
homeostasis?
Options:
A. A failure of negative feedback causing uncontrolled cooling.
B. A changed set point producing a regulated increase in body
temperature.
C. A metabolic collapse resulting in hypothermia.
D. Positive feedback driving continued fever without regulation.
Correct Answer: B
Rationales:
• Correct (B): Pyrogens alter the hypothalamic set point so
the body actively raises temperature (fever) via regulated
mechanisms—an adjusted, not failed, homeostatic
response.
• A: Negative feedback is still operative but around a higher
set point; it’s not a failure causing cooling.
• C: Metabolic collapse and hypothermia are inconsistent
with fever where temperature rises.
• D: Fever is mediated by an altered set point with feedback;
it’s not a classic positive-feedback loop.
Teaching Point: Fever reflects an increased hypothalamic
set point and a regulated rise in body temperature.
Citation: Scanlon, V., & Sanders, T. (2021). Essentials of
Anatomy and Physiology (8th Ed.). Ch. 1.
