BIOLOGY

The Peripheral nervous system is 

                      Nervous system                             Co-ordination  Co-ordination is defined as the process by which different parts of an organism work together for proper effectiveness. Coordination is achieved in the body of mammals through the action of:  1. The nervous system 2. The endocrine system (Hormones) The hypothalamus of the brain is the link between the two systems. Hormones  - They are chemical substances secreted by endocrine (ductless) glands, directly into the blood (circulatory system) which on reaching a target organ, stimulate the activity of that organ. Hormonal Nervous Transmission is chemical Transmission is mechanical  and chemical Slow transmission Rapid transmission The response is widespread Response is localized Target organs receive response effector organs receive response Long last ...