ATI LPN
Timby's Introductory Medical-Surgical Nursing Thirteenth, North American Edition
Chapter 49 : Introduction to the Endocrine System Questions
Question 1 of 5
A nursing student asks the instructor why the pituitary gland is called the 'master gland.' What is the best response by the instructor?
Correct Answer: A
Rationale: The pituitary gland is called the master gland because it regulates the function of other endocrine glands through its hormone secretions. However, the hypothalamus influences the pituitary, and the pituitary secretes multiple hormones beyond growth hormone, not just regulating metabolism.
Question 2 of 5
A client is experiencing gastrointestinal (GI) bleeding from ruptured esophageal varices. What medication does the nurse prepare for administration that mimics the actions of somatostatin that will affect the GI bleeding?
Correct Answer: D
Rationale: Octreotide mimics the actions of somatostatin and is used to reduce gastrointestinal bleeding, particularly from esophageal varices, requiring fewer blood transfusions. Omeprazole reduces stomach acid, epinephrine affects cardiovascular function, and vasopressin is less preferred due to side effects.
Question 3 of 5
A client has a decreased level of thyroid hormone being excreted. What will the feedback loop do to maintain the level of thyroid hormone required to remain homeostatic stability?
Correct Answer: A
Rationale: Most hormones, including thyroid hormones, are regulated by negative feedback, where a decrease in hormone levels stimulates the releasing gland (e.g., the pituitary) to secrete more thyroid-stimulating hormone to restore homeostasis.
Question 4 of 5
The nurse is attempting to locate the thyroid gland of a client in order to determine if it is enlarged. Where should the nurse palpate the thyroid gland?
Correct Answer: C
Rationale: The thyroid gland is located in the lower neck anterior to the trachea, divided into two lateral lobes joined by the isthmus. Palpation in this area helps assess for enlargement.
Question 5 of 5
The nurse is reviewing a client's laboratory studies and determines that the client has an elevated calcium level. What does the nurse know will occur as a result of the rise in the serum calcium level?
Correct Answer: D
Rationale: A rise in serum calcium stimulates the thyroid gland to release calcitonin, which inhibits calcium release from bones to lower blood calcium levels and maintain homeostasis.