Stimulus defines the changes in the environmental condition, that are detected by receptors present in the body. Relevant changes in the activities of organisms to a particular stimulus are called their reactions or responses. Living organisms show their response to different kinds of stimuli such as, light, heat, cold, sound, smell, taste, touch, pressure, pain, etc .

Reflex arc is the pathway which is taken by nerve impulse to accomplish reflex action. Reflex action is the result of the coordination of the spinal cord and peripheral nervous system. This action does not involve the brain. The pathway in which impulses travel during the reflex action is called a reflex arc.

Science Standard 10>Chapter 15 - Nervous System>TEXTBOOK EVALUATION

TEXTBOOK EVALUATION

Author:Tamil Nadu Board

Tamil Nadu Board Science Solutions for Exercise - TEXTBOOK EVALUATION

Simple step-by-step solutions to TEXTBOOK EVALUATION questions of Nervous System from Science Standard 10. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.