Difficulty: Medium
Average Score: 92%
Simulated
A nurse is educating a client about the sympathetic nervous system. Which of the following statements is correct?
Correct answer
A
Rationale
Correct Answer: A. The sympathetic nervous system is responsible for 'fight or flight.'
Rationale:
1. Fight or flight response: The sympathetic nervous system activates in response to stress, preparing the body for action.
2. Physiological changes: It increases heart rate, dilates airways, and releases adrenaline, aiding in survival.
3. Evolutionary advantage: This response helped our ancestors survive dangerous situations.
Incorrect Choices:
B: The parasympathetic, not sympathetic, system is responsible for rest and digest.
C: Cranial nerves are part of the peripheral nervous system, not the sympathetic division.
D: The sympathetic system typically raises, not lowers, blood pressure during stress responses.
Rationale:
1. Fight or flight response: The sympathetic nervous system activates in response to stress, preparing the body for action.
2. Physiological changes: It increases heart rate, dilates airways, and releases adrenaline, aiding in survival.
3. Evolutionary advantage: This response helped our ancestors survive dangerous situations.
Incorrect Choices:
B: The parasympathetic, not sympathetic, system is responsible for rest and digest.
C: Cranial nerves are part of the peripheral nervous system, not the sympathetic division.
D: The sympathetic system typically raises, not lowers, blood pressure during stress responses.