Question

One of the following gives the correct sequence of the components in a reflex arc. This is :
(a) Receptors → Muscle → Sensory neuron → Motor neuron → Spinal cord
(b) Receptors → Motor neuron → Spinal cord → Sensory neuron → Muscle
(c) Receptors → Spinal cord → Sensory neuron → Motor neuron → Muscle
(d) Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle

Answer 1

(d) Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle

The pathway taken by a nerve impulse in a reflex action is called reflex arc.
The correct sequence of the components in a reflex arc is given below:

Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle