Question

What is a reflex arc?

Answer 1

Reflex arc:

1. Reflex is a neurological mechanism or pathway that controls reflex.
2. Reflex or reflex action refers to the instantaneous response to the stimuli without thinking.
3. In reflex arc as soon as the spinal cord receives a signal the response will be seen even before the brain gets the single.
4. Whenever we touch any hot object the immediate response seen is an example of a reflex action.

Types of neurons involved in a reflex arc:

1. Reflex arc involves only three types of neurons sensory, motor, and relay neurons.
2. A sensory neuron receives the signal and passes it to the relay neuron.
3. Relay neuron is present in the spinal cord and acts as a connection between sensory and motor neurons.
4. The motor neuron carries the signal to the target organ or site.