-The involuntary,automatic and immediate response of our body against external stimuli called reflex action.
-Reflex action do not require thought or decision.
-More than 200 reflex action are known in human body.
-Marshal discovered reflex action in 1833.
-Reflex action do not require will of the organism.eg-knee-jerk reflex,coughing etc.
-Knee-jerk reflex:-When the patellar tendon is hit by a small hammer,the quadriceps muscle initiate a stritch reflex which causes the lower leg to move foreward.
-Reflex Pathway:-This pathway include afferent neuron and efferent neuron in a series.
-Reflex Arc:-The entire impulse circuit of a reflex response is known as reflex arc.
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