1.
(2021高二上·鶴崗月考)
為研究交感神經(jīng)和副交感神經(jīng)對心臟的支配作用,分別測定狗在正常情況、阻斷副交感神經(jīng)和阻斷交感神經(jīng)后的心率,結(jié)果如下表所示。下列分析錯誤的是( )
實驗處理 | 心率/(次·min-1) |
正常情況 | 90 |
阻斷副交感神經(jīng) | 180 |
阻斷交感神經(jīng) | 70 |
A . 副交感神經(jīng)興奮引起心臟搏動減慢
B . 對心臟支配占優(yōu)勢的是副交感神經(jīng)
C . 交感神經(jīng)和副交感神經(jīng)的作用是相互協(xié)同的
D . 正常情況下,交感神經(jīng)和副交感神經(jīng)均可檢測到興奮