The brain is composed of thee main divisions. They are the Cerebrum, the Cerebellum and the Brain Stem. The cerebrum has two haves, or hemispheres. Intelligence, learnig and judgement reside in these two halves. The cerebrums fill the entire upper part of your skull, and this should give some idea about its importantce. The cerebellum (it is a Latin word meaning 'Little Cerebrum') is only one-eighth the size of the cerebrum. Its main functions are to maintain equilibrium and to coordinate muscular activities. The brain stem, is also sometimes called the lower brain. It includes parts such as the thalamus and hypothalamus, which regulate hunger, thirst, sleep etc..The midbrain and pons, whose task is to transfer impulses from one part of the brain to another; and the mesulla which controls blood pressure, the beating of the heart, and other vital functions.
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