Our BRAIN controls the Central
Nervous System,, in co-ordination with cranial nerves & spinal cord and
regulates virtually all human activity.. Involuntary actions,, such as heart
beat,, respiration & digestion are unconsciously governed by the brain,, through
our nervous system.. Complex activities like reasoning & thoughts,, is
consciously controlled..
Our BRAIN is divided into three
parts: The FOREBRAIN,, The MIDBRAIN & The HINDBRAIN.. The forebrain includes the several lobes of the
Cerebral Cortex that control higher functions,, while the mid- and hindbrain
are more involved with unconscious,, autonomic functions.. During encephalization,,
human brain mass increased beyond that of other species relative to body mass..
This process was especially pronounced in the neocortex (a section of the brain
that involved with linguistic & consciousness)..
Basic systems that alert humans to stimuli,, sense events in the environment,,
and maintain homeostasis are similar to those of basic vertebrates.. Human
consciousness is founded upon the extended capacity of the modern neocortex,,
as well as the greatly developed structures of the BRAIN STEM..
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