Research topic:brain

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Find more facts and information on our topic page about brain

brain

World Encyclopedia | 2005 | © World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

brain Mass of nerve tissue which regulates all physical and mental activity; it is continuous with the spinal cord. Weighing about 1.5kg (3.3lb) in the adult (about 2% of body weight), the human brain has three parts: the hindbrain, where basic physiological processes such as breathing and the heartbeat are coordinated; the midbrain links the hindbrain and the forebrain, which is the seat of all higher functions and attributes (personality, intellect, memory, emotion), as well as being involved in sensation and initiating voluntary movement. The forebrain includes the highly fissured cerebrum that is the brain's most highly developed part. See also central nervous system; cerebrum

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