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【单选题】
下列关于压力感受性反射的描述正确的是。
A.
感受器是劲动脉体和主动脉体。
B.
劲动脉,主动脉弓压力感受器能直接感受血压的变化。
C.
正常情况下,对血压调节不起作用。
D.
当传入冲动增多时,所有传出神经的冲动都减少。
E.
传入冲动频率不随血压波动发生变化。
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