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If nerve signals reach muscles but the muscles cannot contract, what conclusion can be made about the role of an effector?

Answer and explanation

Correct answer: An effector is necessary to produce a response

A response pathway includes a receptor, coordinating centre, nerve pathway, and effector. A muscle is an effector because it carries out the response by contracting after receiving a suitable nerve signal. If the signal arrives but contraction does not occur, the final action cannot be completed. Therefore the effector is essential; a receptor only detects the stimulus and a synapse only transfers signals.

Related tags

EffectorMuscleResponseNervous SystemControl And CoordinationScienceClass 10 Mcq

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