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HESI LPN · HESI LPN Medical Surgical Nursing · HESI Exam Questions on Endocrine System

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Your patient is diagnosed with myasthenia gravis, and she is given a prescription for pyridostigmine. Which of the following best summarizes the drugÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢s mechanism of action?

A. Blocks muscarinic receptors, so that acetylcholine preferentially stimulates skeletal muscle

B. Inhibits reuptake of acetylcholine by motor nerves

C. Inhibits skeletal muscle activation at rest so that the muscles are less susceptible to fatigue during exercise

D. Inhibits breakdown of acetylcholine, thereby improving activation of skeletal muscle by acetylcholine

Expert Explanatory Rationale

Correct Answer: Inhibits breakdown of acetylcholine, thereby improving activation of skeletal muscle by acetylcholine

Question 2 of 5

Which hormone stimulates gluconeogenesis in the liver?

A. Insulin

B. Growth Hormone

C. Glucagon

D. Estrogen

Expert Explanatory Rationale

Correct Answer: Glucagon

Question 3 of 5

Through which opening does the food leave the stomach?

A. The pyloric sphincter

B. The ilea caecal valve

C. The pelvic sphincter

D. The pylorus sphincter

Expert Explanatory Rationale

Correct Answer: The pyloric sphincter

Question 4 of 5

A 32-year-old woman presents with a blood pressure of 155/96 mm Hg. In response to questioning, she admits that she loves licorice and eats some at least three times a week. She probably has a low level of

A. type 2 11ÃƒÅ½Ã‚Â²-hydroxysteroid dehydrogenase activity

B. ACTH

C. 11ÃƒÅ½Ã‚Â²-hydroxylase activity

D. glucocorticoid transferase

Expert Explanatory Rationale

Correct Answer: type 2 11ÃƒÅ½Ã‚Â²-hydroxysteroid dehydrogenase activity

Question 5 of 5

While awaiting surgery for removal of an adrenal tumor that has produced Cushing syndrome, Mrs. A. has been placed on a strict diet to help manage her symptoms. The nurse's evaluation that the diet has been helpful includes observations that Mrs. A.

A. has gained 5 lb

B. has consistently low blood sugar values

C. maintains blood pressure within normal limits

D. becomes more moody

Expert Explanatory Rationale

Correct Answer: maintains blood pressure within normal limits

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