EVERYDAY SCIENCE

Detailed explanation-1: -An involuntary response to a stimulus is known as reflex action. Reflex actions occur when our body needs to react to immediate danger such as accidentally tough a hot object. A reflex arc is a neural pathway that controls a reflex action.

Detailed explanation-2: -A reflex is an automatic, involuntary response to an incoming stimulus. Sensory (afferent) neurons transmit information from the perimeter of the body to the central nervous system.

Detailed explanation-3: -A reflex is an involuntary (say: in-VAHL-un-ter-ee), or automatic, action that your body does in response to something-without you even having to think about it. You don’t decide to kick your leg, it just kicks. There are many types of reflexes and every healthy person has them.

Detailed explanation-4: -A reflex action is an involuntary or automatic action in response to impulses initiated by a stimulus. In other words, reflex action is a rapid or quick response to stimuli which are not consciously controlled by the brain.

Detailed explanation-5: -Most reflex arcs involve only three neurons. The stimulus, such as a needle stick, stimulates the pain receptors of the skin, which initiate an impulse in a sensory neuron. This travels to the spinal cord where it passes, by means of a synapse, to a connecting neuron called the relay neuron situated in the spinal cord.