NURSING PATHOPHYSIOLOGY — EXAM 3 COMPLETE STUDY GUIDE QUESTIONS WITH VERIFIED ANSWERS & DETAILED RATIONALES 2026/2027 UPDATE| BRAND NEW VERSION!!

NURSING PATHOPHYSIOLOGY — EXAM 3 COMPLETE STUDY GUIDE
QUESTIONS WITH VERIFIED ANSWERS & DETAILED RATIONALES
2026/2027 UPDATE| BRAND NEW VERSION!!

TABLE OF CONTENTS
SECTION 1: ENDOCRINE DISORDERS ................................. Q 1–60
SECTION 2: RENAL & URINARY DISORDERS ........................... Q 61–120
SECTION 3: GASTROINTESTINAL & HEPATIC DISORDERS ................ Q 121–170
SECTION 4: MUSCULOSKELETAL DISORDERS ........................... Q 171–220
SECTION 5: NEUROLOGIC DISORDERS ................................ Q 221–270
SECTION 6: REPRODUCTIVE DISORDERS & NGN CASE SCENARIOS ........ Q 271–300

SECTION 1: ENDOCRINE DISORDERS (Q 1–60)
Q1. Which hormone is primarily responsible for regulating blood glucose by
promoting glucose uptake into cells?
A) Glucagon
B) Insulin
C) Cortisol
D) Epinephrine
Answer: B
Rationale: Insulin is the primary hormone that lowers blood glucose by promoting
glucose uptake into cells, particularly muscle and adipose tissue. Glucagon (A)
raises blood glucose. Cortisol (C) and epinephrine (D) also raise blood glucose.

Q2. What is the primary cause of type 1 diabetes mellitus?
A) Insulin resistance
B) Autoimmune destruction of pancreatic beta cells
C) Excessive insulin production
D) Decreased glucagon production
Answer: B
Rationale: Type 1 diabetes mellitus is caused by autoimmune destruction of
pancreatic beta cells, leading to absolute insulin deficiency. Insulin resistance (A)
is characteristic of type 2 diabetes.

Q3. What is the primary cause of type 2 diabetes mellitus?
A) Autoimmune destruction of beta cells
B) Insulin resistance and relative insulin deficiency
C) Absolute insulin deficiency

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,D) Excessive glucagon production
Answer: B
Rationale: Type 2 diabetes mellitus is characterized by insulin resistance and
relative insulin deficiency, often associated with obesity and genetic factors.

Q4. A patient with type 1 diabetes presents with polyuria, polydipsia, and
polyphagia. What is the primary mechanism of polyuria?
A) Osmotic diuresis due to hyperglycemia
B) Increased ADH secretion
C) Decreased renal blood flow
D) Increased aldosterone secretion
Answer: A
Rationale: Hyperglycemia exceeds the renal threshold for glucose reabsorption,
causing glucose to remain in the tubules and draw water osmotically, leading to
polyuria.

Q5. What is the primary cause of diabetic ketoacidosis (DKA)?
A) Insulin deficiency and increased counterregulatory hormones
B) Insulin excess
C) Increased glucose intake
D) Decreased glucagon production
Answer: A
Rationale: DKA is caused by insulin deficiency and increased counterregulatory
hormones (glucagon, cortisol, epinephrine), leading to lipolysis and ketone
production.

Q6. What is the primary cause of hyperosmolar hyperglycemic state (HHS)?
A) Severe insulin deficiency and dehydration
B) Mild insulin deficiency and severe dehydration
C) Insulin excess
D) Increased glucose intake
Answer: B
Rationale: HHS is characterized by severe hyperglycemia, hyperosmolality, and
dehydration, typically in patients with type 2 diabetes who have some residual
insulin production.

Q7. What is the primary cause of hypoglycemia in a patient with diabetes?
A) Excess insulin or insufficient glucose intake
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,B) Insulin deficiency
C) Increased glucose intake
D) Decreased glucagon production
Answer: A
Rationale: Hypoglycemia is most commonly caused by excess insulin (from
medication) or insufficient glucose intake.

Q8. What is the primary cause of diabetic retinopathy?
A) Microvascular damage from chronic hyperglycemia
B) Macrovascular damage
C) Increased intraocular pressure
D) Autoimmune destruction
Answer: A
Rationale: Diabetic retinopathy is caused by microvascular damage from chronic
hyperglycemia, leading to retinal ischemia and neovascularization.

Q9. What is the primary cause of diabetic nephropathy?
A) Microvascular damage from chronic hyperglycemia
B) Macrovascular damage
C) Infection
D) Autoimmune destruction
Answer: A
Rationale: Diabetic nephropathy is caused by microvascular damage from chronic
hyperglycemia, leading to glomerular damage and proteinuria.

Q10. What is the primary cause of diabetic neuropathy?
A) Microvascular damage and metabolic changes from chronic hyperglycemia
B) Macrovascular damage
C) Infection
D) Autoimmune destruction
Answer: A
Rationale: Diabetic neuropathy is caused by microvascular damage and metabolic
changes from chronic hyperglycemia, leading to nerve damage.

Q11. Which hormone is primarily responsible for regulating calcium levels by
increasing calcium reabsorption from bone and kidneys?
A) Calcitonin
B) Parathyroid hormone (PTH)
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, C) Vitamin D
D) Insulin
Answer: B
Rationale: Parathyroid hormone (PTH) increases calcium reabsorption from bone
and kidneys, raising serum calcium levels. Calcitonin (A) lowers calcium.

Q12. Which hormone lowers serum calcium levels by inhibiting bone resorption?
A) Parathyroid hormone (PTH)
B) Calcitonin
C) Vitamin D
D) Insulin
Answer: B
Rationale: Calcitonin lowers serum calcium levels by inhibiting bone resorption
and increasing renal calcium excretion.

Q13. What is the primary cause of hyperparathyroidism?
A) Excess PTH secretion
B) PTH deficiency
C) Calcitonin excess
D) Vitamin D deficiency
Answer: A
Rationale: Hyperparathyroidism is caused by excess PTH secretion, leading to
hypercalcemia.

Q14. What is the primary cause of hypoparathyroidism?
A) PTH deficiency
B) PTH excess
C) Calcitonin deficiency
D) Vitamin D excess
Answer: A
Rationale: Hypoparathyroidism is caused by PTH deficiency, leading to
hypocalcemia.

Q15. What is the primary cause of Cushing syndrome?
A) Excess cortisol
B) Cortisol deficiency
C) Aldosterone excess
D) Aldosterone deficiency
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