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【单选题】
自主神经系统对心血管活动的调控中错误的是()。A.
心脏受到交感神经和副交感神经双重调控，前者是兴奋作用，后者具有抑制作用
B.
当血压升高时，动脉管壁受到牵拉，交感神经会兴奋，血管会收缩
C.
动脉血压降低时，压力感受器传入冲动减少，迷走神经紧张性减弱，交感神经紧张性会加强，血管会收缩
D.
血压升高时，压力感受器传入冲动增加，迷走神经紧张性活动加强，心交感神经紧张性活动减弱，血管会舒张
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