BIOL252 Human Anatomy & Physiology II Module 1
Exam Actual Exam 2026/2027 | Detailed Rationales
| Complete Exam-Style Questions | Graded A+ | Pass
Guaranteed
Total Questions: 70 | Time: 120 min | Pass: 80%
TABLE OF CONTENTS
Section 1 | Endocrine System – Glands & Hormones | Q1 – Q12
Section 2 | Endocrine System – Feedback Mechanisms & Disorders | Q13 – Q24
Section 3 | Blood – Components, Formation & Function | Q25 – Q36
Section 4 | Cardiovascular System – Heart Anatomy & Physiology | Q37 – Q48
Section 5 | Cardiovascular System – Blood Vessels & Hemodynamics | Q49 – Q60
Section 6 | Lymphatic System & Immunity Foundations | Q61 – Q70
Instructions: Choose the single best answer. Pass: 80% in 120 minutes.
══════════════════════════════════════
SECTION 1: ENDOCRINE SYSTEM – GLANDS & HORMONES Q1 – Q12
══════════════════════════════════════
Question 1 of 70
A 34-year-old histology technician is reviewing pituitary gland slides. She notes the
posterior lobe has a pale, fibrous appearance compared to the highly cellular anterior
lobe. Her supervisor asks her to identify which statement correctly describes hormone
synthesis in the posterior lobe.
A. It synthesizes oxytocin and antidiuretic hormone directly from pituicytes.
B. It produces growth hormone and prolactin under hypothalamic stimulation.
C. It secretes tropic hormones that regulate other endocrine glands.
D. It stores and releases hormones synthesized in the hypothalamus. ✓ CORRECT
Correct Answer: D
,Rationale: The posterior pituitary consists largely of axon terminals from hypothalamic
neurons and stores hormones produced in the supraoptic and paraventricular nuclei.
Choice A is tempting because pituicytes are glial cells in the posterior lobe, but they do
not synthesize hormones. In clinical practice, this distinction explains why hypothalamic
damage can cause diabetes insipidus even with an intact posterior pituitary.
Question 2 of 70
A 45-year-old woman undergoes total thyroidectomy for papillary carcinoma. In the
PACU, the nurse notes she is developing perioral numbness and a positive Chvostek
sign. The surgeon explains that this hypocalcemia most likely resulted from accidental
disruption of which structures during the procedure.
A. The adrenal medullae
B. The parathyroid glands ✓ CORRECT
C. The cervical sympathetic ganglia
D. The carotid bodies
Correct Answer: B
Rationale: The four parathyroid glands are embedded in the posterior thyroid capsule
and are at risk during thyroidectomy, with injury causing acute hypocalcemia from PTH
deficiency. Choice D is incorrect because carotid bodies are lateral to the thyroid and
function in chemoreception, not calcium homeostasis. Surgeons routinely identify and
preserve parathyroid tissue during thyroid operations to prevent this complication.
Question 3 of 70
A 28-year-old man with type 1 diabetes is experiencing hypoglycemia during a hike. His
glucagon emergency kit is administered. A medical student asks which second
messenger system glucagon primarily activates in hepatocytes to stimulate
glycogenolysis.
,A. Tyrosine kinase receptor phosphorylation
B. IP3 and diacylglycerol cascade
C. cAMP and protein kinase A pathway ✓ CORRECT
D. Nuclear receptor gene transcription
Correct Answer: C
Rationale: Glucagon binds G-protein coupled receptors on hepatocytes, activating
adenylyl cyclase to increase cAMP and stimulate protein kinase A, which
phosphorylates enzymes that break down glycogen. Choice A describes the insulin
receptor mechanism, and confusing these two pathways is a common error among
students learning counter-regulatory hormone signaling.
Question 4 of 70
A 52-year-old man with polymyalgia rheumatica is prescribed prednisone. His
pharmacist explains that this synthetic glucocorticoid mimics the primary hormonal
output of which adrenal cortical zone.
A. Zona fasciculata ✓ CORRECT
B. Zona glomerulosa
C. Zona reticularis
D. Adrenal medulla
Correct Answer: A
Rationale: The zona fasciculata produces cortisol, the primary glucocorticoid that
regulates metabolism and suppresses inflammation, making it the physiological
counterpart to prednisone. Choice B is tempting because it is also an adrenal cortical
zone, but the zona glomerulosa secretes aldosterone, not cortisol.
Question 5 of 70
, A 19-year-old cyclist is banned after testing positive for recombinant erythropoietin. At
the arbitration hearing, the physiologist testifies that in healthy adults, EPO is primarily
synthesized and released from which organ in response to renal hypoxia.
A. Liver
B. Kidney ✓ CORRECT
C. Bone marrow
D. Spleen
Correct Answer: B
Rationale: Peritubular interstitial cells in the kidney produce erythropoietin when oxygen
delivery falls, stimulating erythropoiesis in bone marrow. Choice A is a common error
because the liver produces EPO during fetal development, but renal production
dominates after birth. Recombinant EPO abuse in sports directly mimics this renal
oxygen-sensing mechanism.
Question 6 of 70
A 38-year-old woman presents with bilateral milky nipple discharge and amenorrhea.
Her serum prolactin is 180 ng/mL. The attending is asked to identify which anterior
pituitary cell type hypersecretes this hormone.
A. Basophils
B. Chromophobes
C. Acidophils ✓ CORRECT
D. Pituicytes
Correct Answer: C
Rationale: Prolactin is secreted by lactotrophs, which are acidophil cells in the anterior
pituitary that stain pink with eosin. Choice A is incorrect because basophils produce
ACTH, TSH, FSH, and LH, and students often confuse acidophil and basophil hormone
products.
Exam Actual Exam 2026/2027 | Detailed Rationales
| Complete Exam-Style Questions | Graded A+ | Pass
Guaranteed
Total Questions: 70 | Time: 120 min | Pass: 80%
TABLE OF CONTENTS
Section 1 | Endocrine System – Glands & Hormones | Q1 – Q12
Section 2 | Endocrine System – Feedback Mechanisms & Disorders | Q13 – Q24
Section 3 | Blood – Components, Formation & Function | Q25 – Q36
Section 4 | Cardiovascular System – Heart Anatomy & Physiology | Q37 – Q48
Section 5 | Cardiovascular System – Blood Vessels & Hemodynamics | Q49 – Q60
Section 6 | Lymphatic System & Immunity Foundations | Q61 – Q70
Instructions: Choose the single best answer. Pass: 80% in 120 minutes.
══════════════════════════════════════
SECTION 1: ENDOCRINE SYSTEM – GLANDS & HORMONES Q1 – Q12
══════════════════════════════════════
Question 1 of 70
A 34-year-old histology technician is reviewing pituitary gland slides. She notes the
posterior lobe has a pale, fibrous appearance compared to the highly cellular anterior
lobe. Her supervisor asks her to identify which statement correctly describes hormone
synthesis in the posterior lobe.
A. It synthesizes oxytocin and antidiuretic hormone directly from pituicytes.
B. It produces growth hormone and prolactin under hypothalamic stimulation.
C. It secretes tropic hormones that regulate other endocrine glands.
D. It stores and releases hormones synthesized in the hypothalamus. ✓ CORRECT
Correct Answer: D
,Rationale: The posterior pituitary consists largely of axon terminals from hypothalamic
neurons and stores hormones produced in the supraoptic and paraventricular nuclei.
Choice A is tempting because pituicytes are glial cells in the posterior lobe, but they do
not synthesize hormones. In clinical practice, this distinction explains why hypothalamic
damage can cause diabetes insipidus even with an intact posterior pituitary.
Question 2 of 70
A 45-year-old woman undergoes total thyroidectomy for papillary carcinoma. In the
PACU, the nurse notes she is developing perioral numbness and a positive Chvostek
sign. The surgeon explains that this hypocalcemia most likely resulted from accidental
disruption of which structures during the procedure.
A. The adrenal medullae
B. The parathyroid glands ✓ CORRECT
C. The cervical sympathetic ganglia
D. The carotid bodies
Correct Answer: B
Rationale: The four parathyroid glands are embedded in the posterior thyroid capsule
and are at risk during thyroidectomy, with injury causing acute hypocalcemia from PTH
deficiency. Choice D is incorrect because carotid bodies are lateral to the thyroid and
function in chemoreception, not calcium homeostasis. Surgeons routinely identify and
preserve parathyroid tissue during thyroid operations to prevent this complication.
Question 3 of 70
A 28-year-old man with type 1 diabetes is experiencing hypoglycemia during a hike. His
glucagon emergency kit is administered. A medical student asks which second
messenger system glucagon primarily activates in hepatocytes to stimulate
glycogenolysis.
,A. Tyrosine kinase receptor phosphorylation
B. IP3 and diacylglycerol cascade
C. cAMP and protein kinase A pathway ✓ CORRECT
D. Nuclear receptor gene transcription
Correct Answer: C
Rationale: Glucagon binds G-protein coupled receptors on hepatocytes, activating
adenylyl cyclase to increase cAMP and stimulate protein kinase A, which
phosphorylates enzymes that break down glycogen. Choice A describes the insulin
receptor mechanism, and confusing these two pathways is a common error among
students learning counter-regulatory hormone signaling.
Question 4 of 70
A 52-year-old man with polymyalgia rheumatica is prescribed prednisone. His
pharmacist explains that this synthetic glucocorticoid mimics the primary hormonal
output of which adrenal cortical zone.
A. Zona fasciculata ✓ CORRECT
B. Zona glomerulosa
C. Zona reticularis
D. Adrenal medulla
Correct Answer: A
Rationale: The zona fasciculata produces cortisol, the primary glucocorticoid that
regulates metabolism and suppresses inflammation, making it the physiological
counterpart to prednisone. Choice B is tempting because it is also an adrenal cortical
zone, but the zona glomerulosa secretes aldosterone, not cortisol.
Question 5 of 70
, A 19-year-old cyclist is banned after testing positive for recombinant erythropoietin. At
the arbitration hearing, the physiologist testifies that in healthy adults, EPO is primarily
synthesized and released from which organ in response to renal hypoxia.
A. Liver
B. Kidney ✓ CORRECT
C. Bone marrow
D. Spleen
Correct Answer: B
Rationale: Peritubular interstitial cells in the kidney produce erythropoietin when oxygen
delivery falls, stimulating erythropoiesis in bone marrow. Choice A is a common error
because the liver produces EPO during fetal development, but renal production
dominates after birth. Recombinant EPO abuse in sports directly mimics this renal
oxygen-sensing mechanism.
Question 6 of 70
A 38-year-old woman presents with bilateral milky nipple discharge and amenorrhea.
Her serum prolactin is 180 ng/mL. The attending is asked to identify which anterior
pituitary cell type hypersecretes this hormone.
A. Basophils
B. Chromophobes
C. Acidophils ✓ CORRECT
D. Pituicytes
Correct Answer: C
Rationale: Prolactin is secreted by lactotrophs, which are acidophil cells in the anterior
pituitary that stain pink with eosin. Choice A is incorrect because basophils produce
ACTH, TSH, FSH, and LH, and students often confuse acidophil and basophil hormone
products.
