Which laboratory value indicates a response to the sympathetic nervous system?
1. Urinalysis +5 WBC
2. Hemoglobin 13.5 mg/dL
3. Blood glucose 180 mg/dL
4. Blood urea nitrogen 8 mg/dL
Correct Answer: 3
Rationale 1: Urinalysis +5 WBC, while abnormal, indicating an infection in the urinary tract, is not in response to the sympathetic nervous system.
Rationale 2: A hemoglobin of 13.5 mg/dL is a normal level.
Rationale 3: An elevated blood glucose level is a metabolic effect of the sympathetic nervous system.
Rationale 4: A blood urea nitrogen of 8 mg/dL is a normal level.
Global Rationale: An elevated blood glucose level is a metabolic effect of the sympathetic nervous system. Urinalysis +5 WBC, while abnormal, indicating an infection in the urinary tract, is not in response to the sympathetic nervous system. A hemoglobin of 13.5 mg/dL and a blood urea nitrogen of 8 mg/dL are both normal level.
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