ATI LPN
Medical Surgical Endocrine Practice Quiz Questions
Question 1 of 5
Match the correct hormone pair that have antagonistic effects?
Correct Answer: A
Rationale: Calcitonin lowers Ca2+, PTH raises it "antagonistic; others lack direct opposition.
Question 2 of 5
All is true regarding the unique shape of red blood cells except:
Correct Answer: D
Rationale: All are true: biconcave shape aids gas exchange, flexibility, and rouleaux formation.
Question 3 of 5
Which of the following lymphocytes are involved in innate immunity?
Correct Answer: A
Rationale: NK cells are innate, targeting infected/cancer cells; others are adaptive (T/B) or phagocytic.
Question 4 of 5
Which of the following structures most is responsible for determining pulmonary resistance?
Correct Answer: D
Rationale: Bronchioles regulate airflow resistance via smooth muscle constriction/dilation.
Question 5 of 5
The primary role of the phosphate buffer system is to?
Correct Answer: C
Rationale: Phosphate buffers metabolic/fixed acids in blood and urine.