1.
(2021高二上·天津期中)
心臟的搏動(dòng)受交感神經(jīng)和副交感神經(jīng)的調(diào)控，實(shí)驗(yàn)測(cè)定狗的正常心率為90次/分，阻斷副交感神經(jīng)心率為180次/分，阻斷交感神經(jīng)心率為70次/分。有關(guān)敘述正確的是（ ）
A . 交感神經(jīng)和副交感神經(jīng)屬于傳出神經(jīng)
B . 交感神經(jīng)釋放的去甲腎上腺素可降低心率
C . 副交感神經(jīng)興奮導(dǎo)致心臟搏動(dòng)加快
D . 交感神經(jīng)和副交感神經(jīng)活動(dòng)受意識(shí)支配
