Which is the correct sequence of the compounds of a reflex arc

Options

A. Receptors`to`Muscles `to`Sensory neuron `to`Motor neuron`to` Spinal cord
B. Receptors`to` Motor neuron `to`Spinal cord`to` Sensory neuron`to`Muscle
C. Receptors`to` Spinal cord`to`Sensory neuron`to` Motor neuron`to` Muscle
D. Receptors`to`Sensory neuron `to`Spinal cord`to` Motor neuron `to`Muscle

Answer

D

Explanation

The pathway taken by nerve impulse in a reflex action is called the reflex arc. A reflex action is involuntary action in response to a stimulus.e.g, coughing, sneezing etc it follows a specific pathway as given below
Stimulus`to`Receptors`underset("sensory neurons")to`Spinal cord`underset("Motor neurons")tounderset(("Muscle / Gland"))"Effector"to`Response