The first component of a reflex arc is a(n)
A) effector.
B) receptor.
C) central nervous system.

Question

Quizplus · Accepted Answer

The first component of a reflex arc is the receptor, which detects the stimulus and sends a signal to the central nervous system. The effector is the second component, which carries out the response to the stimulus. The central nervous system is the third component, which processes the information and sends signals back to the effector to produce the response.

The First Component of a Reflex Arc Is A(n)