What is Vertebrate brain?
'''IN vertebrate brain''' is the main part of the [[central nervous system]].<ref name=Shepherd/> In [[vertebrate]]s the brain is at the front, in the head. It is protected by the [[skull]] and close to the main [[sense]]s of [[Visual perception|vision]], [[Auditory system|hearing]], [[equilibrioception|balance]], [[gustation|taste]], and [[olfaction|smell]]. As an animal moves forward, its senses collect [[Information|data]] about the surroundings, and that data goes directly to the brain. Brain are extremely complex .the brain control the other organs of the body ,either by activating muscles or by causing secretion of chemicals such as hormones and Neurotransmitters '''.''' Muscular action allows rapid and co -ordinated responses to change in the environment ; hormones and the autonomic nervous system make slower changes in the body .it also a part of human and animal body. The structure of all vertebrate brains is basically the same. At the same time, during the course of [[evolution]], the vertebrate brain has undergone changes, and become more effective. In so-called 'lower' animals, most or all of the brain structure is [[Genetics|inherited]], and therefore their [[behaviour]] is mostly [[instinct]]ive. In [[mammal]]s, and especially in man, the brain is developed further during life by [[learning]]. This has the benefit of helping them fit better into their environment. The capacity to learn is seen best in the [[cerebral cortex]]. == Three principles == # The brain and nervous system is essentially a system which makes connections. It has input from sense organs and output to muscles. <br />It is connected in several ways with the [[endocrine system]], which makes hormones, and the [[digestive system]] and sex system. Hormones work slowly, so those changes are gradual. # The brain is a kind of [[department store]]. It has, all inter-connected, departments which do different things. They all help each other gather senses. # Much of what the body does is not [[conscious]]. A person breathes, [[heart]] b