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【单选题】
Which of the following statement about lung stretch reflex is not ture ( )A.
Effectors are located in the smooth muscle layer of bronchi and bronchioles
B.
afferentz fibers run up the vagus nerve to the medulla oblongata
C.
can promote inspiration to turn into exhalation in time
D.
when normal people breathe calmly, it plays an important role in regulating respiratory rhythm
E.
there are obvious species differences
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