Chapter : Control and Coordination - Notes of Nervous system
CHAPTER 7 – CONTROL & COORDINATION KEY CONCEPTS & GIST OF THE LESSON Coordination-The working together of various organs of the body of an organism in a proper manner to produce appropriate reaction to a stimulus is called coordination. Example : Withdrawal of hand on touching a hot object. Control and Coordination in Animals It is brought about in all animals with the help of two main systems ( a ) Nervous System ( b ) Endocrine System Nervous System Parts of the Nervous system – (i) Brain (ii) Spinal cord (iii) Nerves (Neurons) Functions ( i ) To receive the information from environment ( ii ) To receive the information from various body parts. (Stimuli ® Response) ( iii ) To act accordingly through muscles and glands. Stimulus : Any change in environment to which the organisms respond and react is called stimulus. E.g., touching a hot plate. Response : The reacti...