This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
Sympathetic stimulation causes all except 
Select and explain. 
A. Positive chronotropy, B. Erection, C. Bronchodilatation, D. Vasoconstriction
B: Erection
Answer: B: Erection 
Explanation: Erection is due tovasodilatation which is a parasympathetic activity Ref: guyton and hall textbook of medical physiology 12 edition page number: 651,652,653