This nerve stimulates the diaphragm.
Phrenic nerve
Optic nerve
Intercostal nerve
Sciatic nerve
The Correct Answer is A
A. Phrenic nerve: Correct; it controls diaphragm contraction, enabling breathing.
B. Optic nerve: Responsible for vision, not respiration.
C. Intercostal nerve: Controls intercostal muscles, but not the diaphragm.
D. Sciatic nerve: Largest nerve in the leg; unrelated to respiration.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Due to contraction of the trapezius muscle: Not involved in normal breathing.
B. Referred to as ventilation (breathing): Correct; ventilation is the process of moving air in and out of the lungs.
C. Due to relaxation of the diaphragm and intercostal muscles: Only exhalation is passive due to relaxation.
D. Caused by contraction and relaxation of the bronchiolar smooth muscle: Regulates airflow, not breathing movements.
Correct Answer is A
Explanation
A. Phrenic nerve: Correct; it controls diaphragm contraction, enabling breathing.
B. Optic nerve: Responsible for vision, not respiration.
C. Intercostal nerve: Controls intercostal muscles, but not the diaphragm.
D. Sciatic nerve: Largest nerve in the leg; unrelated to respiration.
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