NURS 611 Week 7 Advanced Pathophysiology Quiz - Endocrine and
Reproductive Systems 2026 |Maryville
1. Which of the following describes the primary pathophysiology of Syndrome
of Inappropriate Antidiuretic Hormone (SIADH)?
A. Excessive water excretion due to ADH deficiency
B. Dilutional hyponatremia caused by excessive water reabsorption in the collecting ducts
C. Hypernatremia caused by decreased water intake
D. Inability of the kidneys to respond to circulating ADH
Answer: B
Rationale: SIADH involves high levels of ADH, leading to excessive water retention and
dilutional hyponatremia regardless of serum osmolarity.
2. In Diabetes Insipidus, a patient has a high serum osmolarity and a low urine
specific gravity. Which mechanism distinguishes neurogenic DI from
nephrogenic DI?
A. The presence of thyroid-stimulating immunoglobulins
B. The presence of ketones in the urine
C. The serum levels of glucose
D. Response to exogenous vasopressin (DDAVP)
Answer: D
Rationale: Neurogenic DI responds to exogenous ADH (vasopressin) because the defect is
in secretion, whereas nephrogenic DI involves end-organ resistance and will not respond.
,3. Which clinical manifestation is a hallmark of Graves disease?
A. Weight gain and bradycardia
B. Hypocalcemia and tetany
C. Exophthalmos and pretibial myxedema
D. Moon face and truncal obesity
Answer: C
Rationale: Graves disease is an autoimmune form of hyperthyroidism characterized by
thyrotoxicosis, exophthalmos (bulging eyes), and pretibial myxedema.
4. Which pathophysiological process occurs in Hashimoto thyroiditis?
A. Autoimmune destruction of the thyroid gland by lymphocytes and antithyroid antibodies
B. Type I hypersensitivity leading to excess T3/T4
C. Hypertrophy of the thyroid due to iodine excess
D. Benign adenoma secreting excess TSH
Answer: A
Rationale: Hashimoto thyroiditis is the most common cause of hypothyroidism in the US,
involving autoimmune destruction of the gland.
5. A patient presents with ‘stones, bones, groans, and psychic overtones.’ Which
electrolyte abnormality is most likely?
A. Hypocalcemia
B. Hypermagnesemia
C. Hypercalcemia
D. Hypophosphatemia
Answer: C
Rationale: These symptoms are classic signs of hypercalcemia, often caused by primary
hyperparathyroidism.
, 6. What is the primary cause of Type 1 Diabetes Mellitus?
A. Autoimmune destruction of pancreatic beta cells
B. Insulin resistance in peripheral tissues
C. Hypersecretion of glucagon by alpha cells
D. Excessive dietary carbohydrate intake
Answer: A
Rationale: Type 1 DM is characterized by absolute insulin deficiency due to T-cell
mediated autoimmune destruction of beta cells.
7. In Type 2 Diabetes Mellitus, what is the role of adipokines?
A. They contribute to insulin resistance and systemic inflammation
B. They decrease the inflammatory response
C. They increase insulin sensitivity in skeletal muscle
D. They stimulate the regeneration of beta cells
Answer: A
Rationale: Adipokines (like TNF-alpha and IL-6) released from adipose tissue promote
insulin resistance and chronic inflammation in Type 2 DM.
8. Which lab finding is most characteristic of Diabetic Ketoacidosis (DKA)?
A. Anion gap metabolic acidosis
B. Blood glucose < 150 mg/dL
C. Serum bicarbonate > 24 mEq/L
D. Respiratory alkalosis
Answer: A
Rationale: DKA results in the accumulation of ketone bodies, which are organic acids,
leading to an increased anion gap metabolic acidosis.
Reproductive Systems 2026 |Maryville
1. Which of the following describes the primary pathophysiology of Syndrome
of Inappropriate Antidiuretic Hormone (SIADH)?
A. Excessive water excretion due to ADH deficiency
B. Dilutional hyponatremia caused by excessive water reabsorption in the collecting ducts
C. Hypernatremia caused by decreased water intake
D. Inability of the kidneys to respond to circulating ADH
Answer: B
Rationale: SIADH involves high levels of ADH, leading to excessive water retention and
dilutional hyponatremia regardless of serum osmolarity.
2. In Diabetes Insipidus, a patient has a high serum osmolarity and a low urine
specific gravity. Which mechanism distinguishes neurogenic DI from
nephrogenic DI?
A. The presence of thyroid-stimulating immunoglobulins
B. The presence of ketones in the urine
C. The serum levels of glucose
D. Response to exogenous vasopressin (DDAVP)
Answer: D
Rationale: Neurogenic DI responds to exogenous ADH (vasopressin) because the defect is
in secretion, whereas nephrogenic DI involves end-organ resistance and will not respond.
,3. Which clinical manifestation is a hallmark of Graves disease?
A. Weight gain and bradycardia
B. Hypocalcemia and tetany
C. Exophthalmos and pretibial myxedema
D. Moon face and truncal obesity
Answer: C
Rationale: Graves disease is an autoimmune form of hyperthyroidism characterized by
thyrotoxicosis, exophthalmos (bulging eyes), and pretibial myxedema.
4. Which pathophysiological process occurs in Hashimoto thyroiditis?
A. Autoimmune destruction of the thyroid gland by lymphocytes and antithyroid antibodies
B. Type I hypersensitivity leading to excess T3/T4
C. Hypertrophy of the thyroid due to iodine excess
D. Benign adenoma secreting excess TSH
Answer: A
Rationale: Hashimoto thyroiditis is the most common cause of hypothyroidism in the US,
involving autoimmune destruction of the gland.
5. A patient presents with ‘stones, bones, groans, and psychic overtones.’ Which
electrolyte abnormality is most likely?
A. Hypocalcemia
B. Hypermagnesemia
C. Hypercalcemia
D. Hypophosphatemia
Answer: C
Rationale: These symptoms are classic signs of hypercalcemia, often caused by primary
hyperparathyroidism.
, 6. What is the primary cause of Type 1 Diabetes Mellitus?
A. Autoimmune destruction of pancreatic beta cells
B. Insulin resistance in peripheral tissues
C. Hypersecretion of glucagon by alpha cells
D. Excessive dietary carbohydrate intake
Answer: A
Rationale: Type 1 DM is characterized by absolute insulin deficiency due to T-cell
mediated autoimmune destruction of beta cells.
7. In Type 2 Diabetes Mellitus, what is the role of adipokines?
A. They contribute to insulin resistance and systemic inflammation
B. They decrease the inflammatory response
C. They increase insulin sensitivity in skeletal muscle
D. They stimulate the regeneration of beta cells
Answer: A
Rationale: Adipokines (like TNF-alpha and IL-6) released from adipose tissue promote
insulin resistance and chronic inflammation in Type 2 DM.
8. Which lab finding is most characteristic of Diabetic Ketoacidosis (DKA)?
A. Anion gap metabolic acidosis
B. Blood glucose < 150 mg/dL
C. Serum bicarbonate > 24 mEq/L
D. Respiratory alkalosis
Answer: A
Rationale: DKA results in the accumulation of ketone bodies, which are organic acids,
leading to an increased anion gap metabolic acidosis.
