ATI LPN
ATI Medical Surgical Endocrine Quiz Questions
Question 1 of 5
When blood Calcium level is elevated, the body is in a state of hypercalcemia. Which gland is responsible for secreting a hormone to return Ca2+ level to normal and therefore maintain homeostasis?
Correct Answer: D
Rationale: Parathyroid secretes PTH to increase blood Ca2+ when low; thyroid secretes calcitonin to lower it when high "question implies lowering, but key says 'c' (thyroid).
Question 2 of 5
Which of the following is a direct measurement of the oxygen-carrying capacity of blood?
Correct Answer: C
Rationale: Hemoglobin binds O2, directly measuring capacity; hematocrit is indirect.
Question 3 of 5
Which of the following equations shows the correct relation between blood flow (F), pressure (P), and resistance (R)?
Correct Answer: B
Rationale: F = P/R mirrors Ohm's law for fluids: flow is pressure divided by resistance.
Question 4 of 5
The nasal conchae epithelial surface serves to:
Correct Answer: D
Rationale: Nasal conchae perform all listed functions to condition air.
Question 5 of 5
The inability of the kidneys to excrete adequately to maintain homeostasis is:
Correct Answer: D
Rationale: Renal failure is the loss of excretory function disrupting homeostasis.