如图是反射弧的模式图,请根据图示回答下列问题:(1)图中[a]、[b]、[d]所示的结构分别是

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(1)根据图中箭头神经冲动传导的方向可知:a是感受器,能接受刺激并产生兴奋能,传导的兴奋就是神经冲动;b是传入神经能将神经冲动传至神经中枢;c是神经中枢,能接受神经冲动,产生新的神经冲动;d是传出神经,能将来自c的神经冲动传至e,引起反射;
(2)反射的反射弧:a感受器→b传入神经→c神经中枢→d传出神经→e效应器.
(3)若反射弧中的b传入神经或d传出神经发生障碍时,反射弧不完整,因此反射活动不能进行.
故答案为:
(1)感受器;传入神经;传出神经
(2)不能进行
(3)a→b→c→d→e

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