Respuesta :

Here is the correct order of activated in a reflex arc.
(1) Receptor: where stimulus action is.
(2) Sensory Neuron: responisble of transmitting afferent impulses to the central nervous system.
(3) Integration Center: Sensory impulse to motor impulse; Direct (monosynaptic) or polysynaptic region in CNS.
(4) Motor Neuron: Efferent impulses from integration center to effector.
(5) Effector: Muscle fiber or gland cell that responds to the efferent impulses. 
Sunnygary

Answer:

1. Receptor: where stimulus action is.

2. Sensory Neuron: responsible of transmitting afferent impulses to the central nervous system.

3. Integration Center: Sensory impulse to motor impulse; Direct (monosynaptic) or polysynaptic region in CNS.

4. Motor Neuron: Efferent impulses from integration center to effector.  

  5. Effector: Muscle fiber or gland cell that responds to the efferent impulses.

B. receptor, sensory, interneuron, motor, effector

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