NUR 631 ADVANCED
PATHOPHYSIOLOGY EXAM 3 -
COMPREHENSIVE REVIEW QUESTIONS
AND ANSWERS 100% VERIFIED BY
EXPERTS. 2026/2027
1. A patient presents with a hemoglobin A1c of 8.5%. Which statement best describes the
pathophysiology of Type 1 Diabetes Mellitus (T1DM) in this context?
A. Insulin resistance in peripheral tissues leading to hyperinsulinemia.
B. Autoimmune-mediated destruction of pancreatic beta cells leading to absolute insulin
deficiency.
C. Excessive glucagon secretion from alpha cells without beta cell involvement.
D. Decreased glucose uptake by the liver due to glycogen storage disease.
Answer: B
Conceptual Explanation: T1DM is characterized by an autoimmune destruction of beta
cells in the Islets of Langerhans, resulting in a total lack of insulin production.
2. In Diabetic Ketoacidosis (DKA), why does the body produce ketone bodies?
A. Lipolysis and fatty acid oxidation due to the inability to use glucose for energy.
B. Increased protein synthesis in the liver.
,C. Excessive glucose breakdown in the absence of oxygen.
D. Retention of bicarbonate by the kidneys.
Answer: A
Conceptual Explanation: Without insulin, cells cannot take up glucose. The body shifts to
breaking down fats (lipolysis), which produces acetyl-CoA that is converted into ketones,
causing metabolic acidosis.
3. Which clinical manifestation is a hallmark sign of Graves’ Disease?
A. Exophthalmos and pretibial myxedema.
B. Periorbital edema and weight gain.
C. Bradycardia and cold intolerance.
D. Moon face and buffalo hump.
Answer: A
Conceptual Explanation: Graves’ disease involves Type II hypersensitivity where
antibodies (TSI) stimulate the TSH receptor, leading to hyperthyroidism, bulging eyes
(exophthalmos), and skin thickening (pretibial myxedema).
4. A patient has a low serum T4 and a high serum TSH. What is the most likely diagnosis?
A. Primary hypothyroidism.
B. Secondary hyperthyroidism.
C. Graves’ Disease.
, D. Pituitary adenoma.
Answer: A
Conceptual Explanation: In primary hypothyroidism (like Hashimoto’s), the thyroid fails
to produce T4. The pituitary attempts to compensate by increasing TSH secretion via the
feedback loop.
5. Which of the following describes the pathophysiology of Primary Hyperparathyroidism?
A. Increased calcium excretion by the kidneys.
B. Excessive PTH secretion causing increased bone resorption and hypercalcemia.
C. Decreased vitamin D activation in the kidneys.
D. Chronic renal failure leading to low calcium.
Answer: B
Conceptual Explanation: Primary hyperparathyroidism is usually caused by an adenoma
that secretes excessive PTH, which pulls calcium from the bones into the blood, leading to
hypercalcemia and potential renal stones.
6. What is the primary difference between Cushing Syndrome and Cushing Disease?
A. Cushing syndrome is excessive cortisol; Cushing disease is specifically caused by a
pituitary ACTH-secreting tumor.
B. Cushing syndrome only affects women, whereas Cushing disease affects men.
C. Cushing disease is caused by exogenous steroid use.
PATHOPHYSIOLOGY EXAM 3 -
COMPREHENSIVE REVIEW QUESTIONS
AND ANSWERS 100% VERIFIED BY
EXPERTS. 2026/2027
1. A patient presents with a hemoglobin A1c of 8.5%. Which statement best describes the
pathophysiology of Type 1 Diabetes Mellitus (T1DM) in this context?
A. Insulin resistance in peripheral tissues leading to hyperinsulinemia.
B. Autoimmune-mediated destruction of pancreatic beta cells leading to absolute insulin
deficiency.
C. Excessive glucagon secretion from alpha cells without beta cell involvement.
D. Decreased glucose uptake by the liver due to glycogen storage disease.
Answer: B
Conceptual Explanation: T1DM is characterized by an autoimmune destruction of beta
cells in the Islets of Langerhans, resulting in a total lack of insulin production.
2. In Diabetic Ketoacidosis (DKA), why does the body produce ketone bodies?
A. Lipolysis and fatty acid oxidation due to the inability to use glucose for energy.
B. Increased protein synthesis in the liver.
,C. Excessive glucose breakdown in the absence of oxygen.
D. Retention of bicarbonate by the kidneys.
Answer: A
Conceptual Explanation: Without insulin, cells cannot take up glucose. The body shifts to
breaking down fats (lipolysis), which produces acetyl-CoA that is converted into ketones,
causing metabolic acidosis.
3. Which clinical manifestation is a hallmark sign of Graves’ Disease?
A. Exophthalmos and pretibial myxedema.
B. Periorbital edema and weight gain.
C. Bradycardia and cold intolerance.
D. Moon face and buffalo hump.
Answer: A
Conceptual Explanation: Graves’ disease involves Type II hypersensitivity where
antibodies (TSI) stimulate the TSH receptor, leading to hyperthyroidism, bulging eyes
(exophthalmos), and skin thickening (pretibial myxedema).
4. A patient has a low serum T4 and a high serum TSH. What is the most likely diagnosis?
A. Primary hypothyroidism.
B. Secondary hyperthyroidism.
C. Graves’ Disease.
, D. Pituitary adenoma.
Answer: A
Conceptual Explanation: In primary hypothyroidism (like Hashimoto’s), the thyroid fails
to produce T4. The pituitary attempts to compensate by increasing TSH secretion via the
feedback loop.
5. Which of the following describes the pathophysiology of Primary Hyperparathyroidism?
A. Increased calcium excretion by the kidneys.
B. Excessive PTH secretion causing increased bone resorption and hypercalcemia.
C. Decreased vitamin D activation in the kidneys.
D. Chronic renal failure leading to low calcium.
Answer: B
Conceptual Explanation: Primary hyperparathyroidism is usually caused by an adenoma
that secretes excessive PTH, which pulls calcium from the bones into the blood, leading to
hypercalcemia and potential renal stones.
6. What is the primary difference between Cushing Syndrome and Cushing Disease?
A. Cushing syndrome is excessive cortisol; Cushing disease is specifically caused by a
pituitary ACTH-secreting tumor.
B. Cushing syndrome only affects women, whereas Cushing disease affects men.
C. Cushing disease is caused by exogenous steroid use.
