There are two majorcoordinate all of the other organ systems in the human body.systems in the body thatsensoryhormonesThesystem is comprised of the brain, spinal cord, andionsassociatednervousThe action of the nervous system allows the body to respond to bothexternal and internalcontrolnervesIn addition, thethe body's other systems, like maintenance of the male and femalereproductive organs.system also regulates the functions ofurinarystimuliThis system's response, however, is slower due to the use ofendocrine

Organ in the body combines together to form an organ system . So there are 12 body system . These are :- (I) Digestive ( II ) Nervous (III ) Reproductive (IV)Immune (V) Respiratory (VI) Endocrine VII) Circulatory (VIII) Skeletal (IX ) Lymphatic (X ) Integumentary XI) Muscular XII ) Excretory1 ) a ) In the body , there are two types of sensory system . b ) Such System synchronise with other body system and work in association with each other. 2 ) a) Nervous system is a part of body system which helps in sending messages to all parts of body . b ) This system mainly consists of Spinal cord, brain and nerves that helps in conveying messages . 3 ) a ) Nervous system consists of brain , spinal cord , and nerves . b ) Nerves are cord like structure which helps body to respond to particular stimulus .4 ) a ) Apart of nervous system , Endocrine system is system that consists of glands . b ) In Endocrine system , transmission takes place via blood vessel . 5 ) a) Endocrine system is a system that involves hormones as chemical messenger . b ) Transmission of messages via hormones is very slow .