WVU BIOL 117 Introductory Physiology Final Exam Prep
Test Bank | 2026/2027 Edition | 250 Verified Questions
BIOL 117 Final Exam 2026-2027 Questions and Answers Already Graded A+. 100% Verified
Solutions | Updated Per Latest Guidelines | Graded A+
This comprehensive test bank for WVU BIOL 117 Introductory Physiology contains 250 verified
questions covering all major topics for the final exam. Each question includes a correct answer and a
detailed rationale to reinforce understanding. Designed to reflect the latest course guidelines, this
resource ensures thorough preparation for achieving a top score.
Key Features:
Cell Physiology and Membrane Transport
Neurophysiology and Synaptic Transmission
Muscle Physiology and Contraction Mechanisms
Cardiovascular and Respiratory Physiology
Renal and Endocrine Systems
Digestive and Reproductive Physiology
Updates for 2026:
- Revised to align with 2026-2027 course syllabus
- Added rationales for all 250 questions
- Updated distractor explanations to clarify common misconceptions
- Incorporated recent exam trends and emphasis areas
- Enhanced organization by topic for targeted study
Abstract:
The WVU BIOL 117 Introductory Physiology Final Exam Prep Test Bank is a meticulously curated collection of
250 exam-style questions designed to assess and reinforce mastery of human physiology. Covering cellular
mechanisms, neurophysiology, muscle function, cardiovascular dynamics, respiratory gas exchange, renal
regulation, endocrine signaling, and digestive/reproductive processes, each question is accompanied by a correct
answer and a comprehensive rationale that explains the underlying physiological principles. Distractors are
analyzed to highlight common errors and deepen conceptual understanding. This resource reflects the latest
2026-2027 curriculum updates and provides a structured approach to exam preparation, enabling students to
identify strengths and areas for improvement. Ideal for self-assessment and review, the test bank ensures readiness
for the final exam and supports achievement of a top grade.
Keywords:
BIOL 117, Introductory Physiology, Final Exam, Test Bank, 250 Questions, Rationales, WVU, 2026-2027
Answer Format:
Each question is followed by the correct answer and a detailed rationale explaining the physiological basis.
Distractor explanations are provided to clarify why incorrect options are wrong, reinforcing key concepts and
preventing common mistakes.
Compliance Checklist:
All 250 questions verified for accuracy
Rationales updated per 2026-2027 guidelines
Distractor explanations included for all multiple-choice items
Organized by physiological system for focused review
Page 1
, Reflects current WVU BIOL 117 curriculum
Content Area Overview:
Content Area Questions Key Topics Weight
Cell Physiology & Membrane 1-40 Homeostasis, cell membrane structure, 16%
Transport transport mechanisms, osmosis, ion channels
Neurophysiology 41-80 Action potentials, synaptic transmission, 16%
neurotransmitters, sensory and motor
pathways
Muscle Physiology 81-110 Skeletal, cardiac, smooth muscle; 12%
excitation-contraction coupling; sliding
filament theory
Cardiovascular Physiology 111-150 Cardiac cycle, blood pressure, ECG, 16%
regulation of heart rate and stroke volume
Respiratory Physiology 151-180 Ventilation, gas exchange, oxygen transport, 12%
acid-base balance
Renal & Endocrine Physiology 181-220 Nephron function, urine formation, hormone 16%
action, feedback loops
Digestive & Reproductive 221-250 Digestion, absorption, male/female 12%
Physiology reproductive cycles, fertilization
Page 2
,Q1. A researcher applies a voltage clamp to a neuron and observes that when the membrane potential is
stepped from -70 mV to 0 mV, a large inward current is followed by a smaller outward current. Which of the
following best explains the molecular basis for the delayed outward current?
A. Voltage-gated Na+ channels inactivate rapidly, while K+ channels activate more slowly.
B. Voltage-gated Ca2+ channels open and allow Ca2+ influx, which then activates Ca2+-dependent K+
channels.
C. The Na+/K+ ATPase pumps out Na+ and brings in K+ to restore resting potential.
D. Leak K+ channels open in response to depolarization to repolarize the membrane.
Correct Answer: A. Voltage-gated Na+ channels inactivate rapidly, while K+ channels activate more slowly.
Rationale: The delayed outward current is due to voltage-gated K+ channels that activate with a slower time
course than Na+ channels. The inward Na+ current inactivates rapidly, while the K+ current persists, leading to
repolarization. Option B describes a mechanism in some neurons but is not the primary cause in this classic
voltage-clamp experiment. Option C is electrogenic but too slow. Option D is incorrect because leak K+ channels
are not voltage-gated.
Why Wrong:
B - Ca2+-dependent K+ channels exist but are not the primary source of delayed outward current in typical
voltage-clamp of a neuron; the question describes a standard Na+/K+ current pattern.
C - The Na+/K+ pump contributes to resting potential but does not produce the rapid outward current seen in
voltage clamp; its kinetics are too slow.
D - Leak K+ channels are not voltage-gated and do not produce a voltage-dependent outward current upon
depolarization.
Reference: Purves et al., Neuroscience, 6th Ed., Ch. 4; Kandel et al., Principles of Neural Science, 5th Ed., Ch. 8
Q2. A patient with chronic kidney disease has a plasma pH of 7.25, PCO2 of 32 mm Hg, and [HCO3-] of 14
mEq/L. Which of the following compensatory mechanisms is most likely contributing to the observed PCO2?
A. Increased renal excretion of H+ and reabsorption of HCO3-
B. Increased alveolar ventilation mediated by peripheral chemoreceptors
C. Decreased alveolar ventilation due to central chemoreceptor inhibition
D. Increased renal production of ammonium to buffer H+
Correct Answer: B. Increased alveolar ventilation mediated by peripheral chemoreceptors
Rationale: The patient has metabolic acidosis (low pH, low HCO3-). The low PCO2 indicates respiratory
compensation via hyperventilation, driven by peripheral chemoreceptors responding to low pH. Option A and D
are renal compensations that occur over days, not the immediate respiratory change. Option C would worsen
acidosis.
Why Wrong:
A - Renal compensation is slower and does not explain the acute drop in PCO2; it would increase HCO3-
reabsorption over days.
C - Decreased ventilation would raise PCO2, exacerbating acidosis; the observed PCO2 is low, indicating
hyperventilation.
D - Increased renal ammonium production is part of renal compensation but does not directly lower PCO2.
Reference: Costanzo, Physiology, 6th Ed., Ch. 9; Guyton & Hall, Textbook of Medical Physiology, 14th Ed., Ch. 41
Q3. In a laboratory experiment, an isolated arteriole is exposed to increasing concentrations of a drug that is
an antagonist at 1-adrenergic receptors. Which of the following changes in arteriolar diameter is most likely
to be observed when the drug is applied in the presence of ongoing sympathetic nerve stimulation at a
constant frequency?
A. Dose-dependent vasodilation
B. Dose-dependent vasoconstriction
C. No change in diameter because the drug does not affect basal tone
Page 3
, D. Initial vasodilation followed by vasoconstriction at higher doses
Correct Answer: A. Dose-dependent vasodilation
Rationale: Sympathetic stimulation normally causes vasoconstriction via norepinephrine binding to ±1-adrenergic receptors
on arteriolar smooth muscle. An 1-antagonist blocks this effect, leading to vasodilation as the ongoing sympathetic tone is
removed. The effect is dose-dependent: higher doses produce greater blockade and more dilation. Option B is opposite. Option
C is incorrect because the drug blocks the effect of sympathetic stimulation. Option D is not typical for a pure antagonist.
Why Wrong:
B - An antagonist does not cause vasoconstriction; it blocks the vasoconstrictor effect of norepinephrine.
C - The drug does affect diameter by blocking sympathetic tone; basal tone may be partly due to other factors, but the
change is still present.
D - There is no biphasic response; a pure antagonist simply blocks the receptor.
Reference: Klabunde, Cardiovascular Physiology Concepts, 3rd Ed., Ch. 4; Katzung & Trevor, Pharmacology, 13th Ed., Ch. 9
Q4. A 24-hour urine collection from a healthy individual on a low-salt diet (20 mmol Na+/day) yields a urine
volume of 1.5 L and a urinary Na+ concentration of 10 mmol/L. Which of the following is the most accurate
estimate of the individual's glomerular filtration rate (GFR) if the plasma Na+ concentration is 140 mmol/L?
A. 100 mL/min
B. 125 mL/min
C. 150 mL/min
D. 180 mL/min
Correct Answer: B. 125 mL/min
Rationale: In a healthy individual, GFR is typically around 125 mL/min and is maintained constant despite
variations in salt intake through autoregulation. The low urinary Na+ excretion reflects increased tubular
reabsorption, not a change in GFR. Thus, the most accurate estimate is 125 mL/min.
Why Wrong:
A - 100 mL/min is below normal GFR and not supported by typical values.
C - 150 mL/min is slightly above normal but still within range; however, 125 mL/min is the standard accepted
value.
D - 180 mL/min is too high for a healthy adult; normal GFR is about 125 mL/min.
Reference: Costanzo, Physiology, 6th Ed., Ch. 6; Guyton & Hall, Textbook of Medical Physiology, 14th Ed., Ch. 26
Q5. Which of the following best explains why a drug that blocks voltage-gated L-type Ca2+ channels in
cardiac myocytes can reduce myocardial oxygen consumption?
A. It decreases heart rate by slowing SA node depolarization.
B. It reduces afterload by dilating arterioles.
C. It decreases contractility by reducing Ca2+ influx during the plateau phase.
D. It increases coronary blood flow by dilating coronary arteries.
Correct Answer: C. It decreases contractility by reducing Ca2+ influx during the plateau phase.
Rationale: L-type Ca2+ channels in ventricular myocytes provide the Ca2+ that triggers calcium-induced calcium
release from the sarcoplasmic reticulum, which is essential for contraction. Blocking these channels reduces
intracellular Ca2+ and thus contractility. Reduced contractility lowers myocardial oxygen demand. While options
A and B also reduce oxygen consumption, they are not the primary direct effect of L-type channel blockade on the
myocyte; the direct effect is on contractility. Option D increases oxygen supply but does not directly reduce
consumption.
Why Wrong:
A - L-type channels are present in SA node, but their blockade does decrease heart rate, but that is not the
primary mechanism for reducing oxygen consumption in the ventricle; the question asks for the best
explanation.
Page 4
Test Bank | 2026/2027 Edition | 250 Verified Questions
BIOL 117 Final Exam 2026-2027 Questions and Answers Already Graded A+. 100% Verified
Solutions | Updated Per Latest Guidelines | Graded A+
This comprehensive test bank for WVU BIOL 117 Introductory Physiology contains 250 verified
questions covering all major topics for the final exam. Each question includes a correct answer and a
detailed rationale to reinforce understanding. Designed to reflect the latest course guidelines, this
resource ensures thorough preparation for achieving a top score.
Key Features:
Cell Physiology and Membrane Transport
Neurophysiology and Synaptic Transmission
Muscle Physiology and Contraction Mechanisms
Cardiovascular and Respiratory Physiology
Renal and Endocrine Systems
Digestive and Reproductive Physiology
Updates for 2026:
- Revised to align with 2026-2027 course syllabus
- Added rationales for all 250 questions
- Updated distractor explanations to clarify common misconceptions
- Incorporated recent exam trends and emphasis areas
- Enhanced organization by topic for targeted study
Abstract:
The WVU BIOL 117 Introductory Physiology Final Exam Prep Test Bank is a meticulously curated collection of
250 exam-style questions designed to assess and reinforce mastery of human physiology. Covering cellular
mechanisms, neurophysiology, muscle function, cardiovascular dynamics, respiratory gas exchange, renal
regulation, endocrine signaling, and digestive/reproductive processes, each question is accompanied by a correct
answer and a comprehensive rationale that explains the underlying physiological principles. Distractors are
analyzed to highlight common errors and deepen conceptual understanding. This resource reflects the latest
2026-2027 curriculum updates and provides a structured approach to exam preparation, enabling students to
identify strengths and areas for improvement. Ideal for self-assessment and review, the test bank ensures readiness
for the final exam and supports achievement of a top grade.
Keywords:
BIOL 117, Introductory Physiology, Final Exam, Test Bank, 250 Questions, Rationales, WVU, 2026-2027
Answer Format:
Each question is followed by the correct answer and a detailed rationale explaining the physiological basis.
Distractor explanations are provided to clarify why incorrect options are wrong, reinforcing key concepts and
preventing common mistakes.
Compliance Checklist:
All 250 questions verified for accuracy
Rationales updated per 2026-2027 guidelines
Distractor explanations included for all multiple-choice items
Organized by physiological system for focused review
Page 1
, Reflects current WVU BIOL 117 curriculum
Content Area Overview:
Content Area Questions Key Topics Weight
Cell Physiology & Membrane 1-40 Homeostasis, cell membrane structure, 16%
Transport transport mechanisms, osmosis, ion channels
Neurophysiology 41-80 Action potentials, synaptic transmission, 16%
neurotransmitters, sensory and motor
pathways
Muscle Physiology 81-110 Skeletal, cardiac, smooth muscle; 12%
excitation-contraction coupling; sliding
filament theory
Cardiovascular Physiology 111-150 Cardiac cycle, blood pressure, ECG, 16%
regulation of heart rate and stroke volume
Respiratory Physiology 151-180 Ventilation, gas exchange, oxygen transport, 12%
acid-base balance
Renal & Endocrine Physiology 181-220 Nephron function, urine formation, hormone 16%
action, feedback loops
Digestive & Reproductive 221-250 Digestion, absorption, male/female 12%
Physiology reproductive cycles, fertilization
Page 2
,Q1. A researcher applies a voltage clamp to a neuron and observes that when the membrane potential is
stepped from -70 mV to 0 mV, a large inward current is followed by a smaller outward current. Which of the
following best explains the molecular basis for the delayed outward current?
A. Voltage-gated Na+ channels inactivate rapidly, while K+ channels activate more slowly.
B. Voltage-gated Ca2+ channels open and allow Ca2+ influx, which then activates Ca2+-dependent K+
channels.
C. The Na+/K+ ATPase pumps out Na+ and brings in K+ to restore resting potential.
D. Leak K+ channels open in response to depolarization to repolarize the membrane.
Correct Answer: A. Voltage-gated Na+ channels inactivate rapidly, while K+ channels activate more slowly.
Rationale: The delayed outward current is due to voltage-gated K+ channels that activate with a slower time
course than Na+ channels. The inward Na+ current inactivates rapidly, while the K+ current persists, leading to
repolarization. Option B describes a mechanism in some neurons but is not the primary cause in this classic
voltage-clamp experiment. Option C is electrogenic but too slow. Option D is incorrect because leak K+ channels
are not voltage-gated.
Why Wrong:
B - Ca2+-dependent K+ channels exist but are not the primary source of delayed outward current in typical
voltage-clamp of a neuron; the question describes a standard Na+/K+ current pattern.
C - The Na+/K+ pump contributes to resting potential but does not produce the rapid outward current seen in
voltage clamp; its kinetics are too slow.
D - Leak K+ channels are not voltage-gated and do not produce a voltage-dependent outward current upon
depolarization.
Reference: Purves et al., Neuroscience, 6th Ed., Ch. 4; Kandel et al., Principles of Neural Science, 5th Ed., Ch. 8
Q2. A patient with chronic kidney disease has a plasma pH of 7.25, PCO2 of 32 mm Hg, and [HCO3-] of 14
mEq/L. Which of the following compensatory mechanisms is most likely contributing to the observed PCO2?
A. Increased renal excretion of H+ and reabsorption of HCO3-
B. Increased alveolar ventilation mediated by peripheral chemoreceptors
C. Decreased alveolar ventilation due to central chemoreceptor inhibition
D. Increased renal production of ammonium to buffer H+
Correct Answer: B. Increased alveolar ventilation mediated by peripheral chemoreceptors
Rationale: The patient has metabolic acidosis (low pH, low HCO3-). The low PCO2 indicates respiratory
compensation via hyperventilation, driven by peripheral chemoreceptors responding to low pH. Option A and D
are renal compensations that occur over days, not the immediate respiratory change. Option C would worsen
acidosis.
Why Wrong:
A - Renal compensation is slower and does not explain the acute drop in PCO2; it would increase HCO3-
reabsorption over days.
C - Decreased ventilation would raise PCO2, exacerbating acidosis; the observed PCO2 is low, indicating
hyperventilation.
D - Increased renal ammonium production is part of renal compensation but does not directly lower PCO2.
Reference: Costanzo, Physiology, 6th Ed., Ch. 9; Guyton & Hall, Textbook of Medical Physiology, 14th Ed., Ch. 41
Q3. In a laboratory experiment, an isolated arteriole is exposed to increasing concentrations of a drug that is
an antagonist at 1-adrenergic receptors. Which of the following changes in arteriolar diameter is most likely
to be observed when the drug is applied in the presence of ongoing sympathetic nerve stimulation at a
constant frequency?
A. Dose-dependent vasodilation
B. Dose-dependent vasoconstriction
C. No change in diameter because the drug does not affect basal tone
Page 3
, D. Initial vasodilation followed by vasoconstriction at higher doses
Correct Answer: A. Dose-dependent vasodilation
Rationale: Sympathetic stimulation normally causes vasoconstriction via norepinephrine binding to ±1-adrenergic receptors
on arteriolar smooth muscle. An 1-antagonist blocks this effect, leading to vasodilation as the ongoing sympathetic tone is
removed. The effect is dose-dependent: higher doses produce greater blockade and more dilation. Option B is opposite. Option
C is incorrect because the drug blocks the effect of sympathetic stimulation. Option D is not typical for a pure antagonist.
Why Wrong:
B - An antagonist does not cause vasoconstriction; it blocks the vasoconstrictor effect of norepinephrine.
C - The drug does affect diameter by blocking sympathetic tone; basal tone may be partly due to other factors, but the
change is still present.
D - There is no biphasic response; a pure antagonist simply blocks the receptor.
Reference: Klabunde, Cardiovascular Physiology Concepts, 3rd Ed., Ch. 4; Katzung & Trevor, Pharmacology, 13th Ed., Ch. 9
Q4. A 24-hour urine collection from a healthy individual on a low-salt diet (20 mmol Na+/day) yields a urine
volume of 1.5 L and a urinary Na+ concentration of 10 mmol/L. Which of the following is the most accurate
estimate of the individual's glomerular filtration rate (GFR) if the plasma Na+ concentration is 140 mmol/L?
A. 100 mL/min
B. 125 mL/min
C. 150 mL/min
D. 180 mL/min
Correct Answer: B. 125 mL/min
Rationale: In a healthy individual, GFR is typically around 125 mL/min and is maintained constant despite
variations in salt intake through autoregulation. The low urinary Na+ excretion reflects increased tubular
reabsorption, not a change in GFR. Thus, the most accurate estimate is 125 mL/min.
Why Wrong:
A - 100 mL/min is below normal GFR and not supported by typical values.
C - 150 mL/min is slightly above normal but still within range; however, 125 mL/min is the standard accepted
value.
D - 180 mL/min is too high for a healthy adult; normal GFR is about 125 mL/min.
Reference: Costanzo, Physiology, 6th Ed., Ch. 6; Guyton & Hall, Textbook of Medical Physiology, 14th Ed., Ch. 26
Q5. Which of the following best explains why a drug that blocks voltage-gated L-type Ca2+ channels in
cardiac myocytes can reduce myocardial oxygen consumption?
A. It decreases heart rate by slowing SA node depolarization.
B. It reduces afterload by dilating arterioles.
C. It decreases contractility by reducing Ca2+ influx during the plateau phase.
D. It increases coronary blood flow by dilating coronary arteries.
Correct Answer: C. It decreases contractility by reducing Ca2+ influx during the plateau phase.
Rationale: L-type Ca2+ channels in ventricular myocytes provide the Ca2+ that triggers calcium-induced calcium
release from the sarcoplasmic reticulum, which is essential for contraction. Blocking these channels reduces
intracellular Ca2+ and thus contractility. Reduced contractility lowers myocardial oxygen demand. While options
A and B also reduce oxygen consumption, they are not the primary direct effect of L-type channel blockade on the
myocyte; the direct effect is on contractility. Option D increases oxygen supply but does not directly reduce
consumption.
Why Wrong:
A - L-type channels are present in SA node, but their blockade does decrease heart rate, but that is not the
primary mechanism for reducing oxygen consumption in the ventricle; the question asks for the best
explanation.
Page 4
