BIOL252: Human Anatomy & Physiology II w/Lab 2026
| Module 8 Exam Review | Actual 70+ Questions &
Verified Answers | Portage Learning | Endocrine &
Cardiovascular Systems
Q001: A 24-year-old male undergoes a glucose tolerance test. Thirty minutes after
ingesting 75 g of glucose, his serum insulin level spikes. Which pancreatic endocrine
cell type is primarily responsible for this response?
Options:
A. Alpha cells secreting glucagon
B. Delta cells secreting somatostatin
C. Beta cells secreting insulin - CORRECT
D. F cells secreting pancreatic polypeptide
(Correct Answer: C)
Q002: During the cardiac cycle, which interval corresponds to the time when ventricular
pressure rises but the AV valves are still open?
Options:
A. Isovolumetric contraction
B. Ventricular ejection
C. Isovolumetric relaxation
D. Ventricular filling - CORRECT
(Correct Answer: D)
Q003: A patient's ECG shows a PR interval of 0.28 seconds. Which conduction structure
is most likely delayed?
Options:
A. Bundle of His
B. Purkinje fibers
C. AV node - CORRECT
D. SA node
(Correct Answer: C)
,Q004: Which hormone increases the heart rate and contractility by binding to
β1-adrenergic receptors?
Options:
A. Insulin
B. Cortisol
C. Epinephrine - CORRECT
D. Calcitonin
(Correct Answer: C)
Q005: A blood sample shows elevated atrial natriuretic peptide (ANP). Which
physiologic condition most likely stimulated its release?
Options:
A. Dehydration
B. Increased atrial stretch - CORRECT
C. Hypotension
D. Acidosis
(Correct Answer: B)
Q006: In a normal ECG, the QRS complex represents which electrical event?
Options:
A. Atrial depolarization
B. Ventricular repolarization
C. Ventricular depolarization - CORRECT
D. Atrial repolarization
(Correct Answer: C)
Q007: Which of the following arteries supplies the posterior interventricular septum in a
right-dominant coronary circulation?
Options:
A. Left anterior descending artery
B. Left circumflex artery
C. Right coronary artery → posterior interventricular branch - CORRECT
D. Marginal artery
(Correct Answer: C)
Q008: A patient's systolic blood pressure is 180 mmHg. Which baroreceptor reflex
response will occur?
Options:
, A. Increased sympathetic output
B. Decreased heart rate and contractility - CORRECT
C. Vasoconstriction
D. Increased ADH secretion
(Correct Answer: B)
Q009: Which layer of the heart wall contains the cardiac muscle tissue?
Options:
A. Epicardium
B. Endocardium
C. Myocardium - CORRECT
D. Pericardial cavity
(Correct Answer: C)
Q010: A drop in serum Ca²⁺ stimulates the parathyroid glands to release PTH. This is an
example of which type of hormonal control?
Options:
A. Neural control
B. Positive feedback
C. Humoral stimulus - CORRECT
D. Hormonal stimulus
(Correct Answer: C)
Q011: Which valve closes at the beginning of ventricular systole, producing the first
heart sound (S1)?
Options:
A. Aortic valve
B. Pulmonary valve
C. Tricuspid valve - CORRECT
D. Mitral valve
(Correct Answer: C)
Q012: A patient's ECG shows peaked T waves and widened QRS. Which electrolyte
imbalance is most likely?
Options:
A. Hypokalemia
B. Hyperkalemia - CORRECT
C. Hypocalcemia
| Module 8 Exam Review | Actual 70+ Questions &
Verified Answers | Portage Learning | Endocrine &
Cardiovascular Systems
Q001: A 24-year-old male undergoes a glucose tolerance test. Thirty minutes after
ingesting 75 g of glucose, his serum insulin level spikes. Which pancreatic endocrine
cell type is primarily responsible for this response?
Options:
A. Alpha cells secreting glucagon
B. Delta cells secreting somatostatin
C. Beta cells secreting insulin - CORRECT
D. F cells secreting pancreatic polypeptide
(Correct Answer: C)
Q002: During the cardiac cycle, which interval corresponds to the time when ventricular
pressure rises but the AV valves are still open?
Options:
A. Isovolumetric contraction
B. Ventricular ejection
C. Isovolumetric relaxation
D. Ventricular filling - CORRECT
(Correct Answer: D)
Q003: A patient's ECG shows a PR interval of 0.28 seconds. Which conduction structure
is most likely delayed?
Options:
A. Bundle of His
B. Purkinje fibers
C. AV node - CORRECT
D. SA node
(Correct Answer: C)
,Q004: Which hormone increases the heart rate and contractility by binding to
β1-adrenergic receptors?
Options:
A. Insulin
B. Cortisol
C. Epinephrine - CORRECT
D. Calcitonin
(Correct Answer: C)
Q005: A blood sample shows elevated atrial natriuretic peptide (ANP). Which
physiologic condition most likely stimulated its release?
Options:
A. Dehydration
B. Increased atrial stretch - CORRECT
C. Hypotension
D. Acidosis
(Correct Answer: B)
Q006: In a normal ECG, the QRS complex represents which electrical event?
Options:
A. Atrial depolarization
B. Ventricular repolarization
C. Ventricular depolarization - CORRECT
D. Atrial repolarization
(Correct Answer: C)
Q007: Which of the following arteries supplies the posterior interventricular septum in a
right-dominant coronary circulation?
Options:
A. Left anterior descending artery
B. Left circumflex artery
C. Right coronary artery → posterior interventricular branch - CORRECT
D. Marginal artery
(Correct Answer: C)
Q008: A patient's systolic blood pressure is 180 mmHg. Which baroreceptor reflex
response will occur?
Options:
, A. Increased sympathetic output
B. Decreased heart rate and contractility - CORRECT
C. Vasoconstriction
D. Increased ADH secretion
(Correct Answer: B)
Q009: Which layer of the heart wall contains the cardiac muscle tissue?
Options:
A. Epicardium
B. Endocardium
C. Myocardium - CORRECT
D. Pericardial cavity
(Correct Answer: C)
Q010: A drop in serum Ca²⁺ stimulates the parathyroid glands to release PTH. This is an
example of which type of hormonal control?
Options:
A. Neural control
B. Positive feedback
C. Humoral stimulus - CORRECT
D. Hormonal stimulus
(Correct Answer: C)
Q011: Which valve closes at the beginning of ventricular systole, producing the first
heart sound (S1)?
Options:
A. Aortic valve
B. Pulmonary valve
C. Tricuspid valve - CORRECT
D. Mitral valve
(Correct Answer: C)
Q012: A patient's ECG shows peaked T waves and widened QRS. Which electrolyte
imbalance is most likely?
Options:
A. Hypokalemia
B. Hyperkalemia - CORRECT
C. Hypocalcemia
