
The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals—only a few invertesponges, jellyfish, adult sea squirts and starfish do not have one, even if diffuse neural tissue is present. It is located in the head, usually close to the primary sensory organs for such senses as vision, hearing, balance, taste, and smell. The brain is the most complex organ in a vertebrate's body. In a typical human the cerebral cortex (the largest part) is estimated to contain 15–33 billion neurons, each connected by synapses to several thousand other neurons. These neurons communicate with one another by means of long protoplasmic fibers called axons, which carry trains of signal pulses called action potentials to distant parts of the brain or body targeting specific recipient cells brates such as
Physiologically, the
function of the brain is to exert centralized control over the other organs of
the body. The brain acts on the rest of the body both by generating patterns of
muscle activity and by driving the secretion of chemicals called hormones. This centralized control allows
rapid and coordinated responses to changes in the environment.
Some basic types of responsiveness such as reflexes can be mediated by the spinal cord or
peripheral ganglia, but sophisticated purposeful
control of behavior based on complex sensory input requires the
information-integrating capabilities of a centralized brain.
From a philosophical point of view, what makes the
brain special in comparison to other organs is that it forms the physical
structure associated with the mind. As Hippocrates put it: "Men ought to know
that from nothing else but the brain come joys,separate
from the brain. Even for present-day neuroscience, the mechanisms by which brain
activity gives rise to consciousness and thought remain very challenging to
understand: despite rapid scientific progress, much about how the brain works
remains a mystery. The operations of individual brain cells are now understood
in considerable detail, but the way they cooperate in ensembles of millions has
yet to be solved. The most promising approaches treat the brain as a biological
computer, very different in mechanism from an electronic computer, but similar
in the sense that it acquires information from the surrounding world, stores
it, and processes it in a variety of ways, analogous to the central
processing unit (CPU) in a computer.
delights, laughter and sports,
and sorrows, griefs, despondency, and lamentations. Through much of history,
the mind was thought to be
This article compares the properties of brains across
the entire range of animal species, with the greatest attention to vertebrates.
It deals with the human brain insofar as it shares the properties of other
brains. The ways in which the human brain differs from other brains are covered
in the human brain article. Several topics that
might be covered here are instead covered there because much more can be said
about them in a human context. The most important is brain disease and the
effects of brain damage, covered in the human brain article because the most
common diseases of the human brain either do not show up in other species, or
else manifest themselves in different ways.
Man was created to perfect as possible by the Creator . All control
and our activities are controlled by the brain . There are
many cells in the brain cells are interconnected . Workings
of the brain is also divided according to their respective duties . It was like all of
our performance is controlled by the brain .
There
is also the division of tasks in the brain structures . There is a right brain and left brain . And also there is the midbrain . Regulate the
function of the right brain imagination , music etc. . And
left brain function to regulate us in concentration , logic , counting etc. . Some
researchers say that is also found in the human midbrain . But
some have also said that the fact that there is no central brain .
There are causes that can provide a good stimulus to the brain , for example, with our set Kitaa lifestyle . Eating good food , sleeping with the right time and stay away from alcohol and so on .
Brain will function better when our brains do not accept something that can not be received . Many factors can mempenagruhi poor performance of the brain . For example , with smoking , eating unhealthy food , sleep hours berantakana and so on .
Brain that God created so much effect on our lives . With the brain so we can sharpen our thinking . By continuing to think and think then it will add to and improve the processes of the brain . However , do not misunderstand . The perfect our brain also has a weakness , fatigue can also meresakan . If you feel tired brain , the brain would normally be difficult to accept and respond to , as well as difficult to organize events or actions . For example, if our brains are tired , we 'll catch it with something that submit their old better known as " slow " on someone .
Brain as though bowing closer to the Creator . So God heard the prayers of the brain to keep his master ( ktia human ) in order to be kept in mind and brain performance.
Well , we as humans should be thankful to have the brain that may be the way it works is more complicated than how we work the next day . Surely we created with all shapes and perfect things . Brain each second was prostrate on the Almighty , how do we ? SubhaAllah , Brain was prostration .
There are causes that can provide a good stimulus to the brain , for example, with our set Kitaa lifestyle . Eating good food , sleeping with the right time and stay away from alcohol and so on .
Brain will function better when our brains do not accept something that can not be received . Many factors can mempenagruhi poor performance of the brain . For example , with smoking , eating unhealthy food , sleep hours berantakana and so on .
Brain that God created so much effect on our lives . With the brain so we can sharpen our thinking . By continuing to think and think then it will add to and improve the processes of the brain . However , do not misunderstand . The perfect our brain also has a weakness , fatigue can also meresakan . If you feel tired brain , the brain would normally be difficult to accept and respond to , as well as difficult to organize events or actions . For example, if our brains are tired , we 'll catch it with something that submit their old better known as " slow " on someone .
Brain as though bowing closer to the Creator . So God heard the prayers of the brain to keep his master ( ktia human ) in order to be kept in mind and brain performance.
Well , we as humans should be thankful to have the brain that may be the way it works is more complicated than how we work the next day . Surely we created with all shapes and perfect things . Brain each second was prostrate on the Almighty , how do we ? SubhaAllah , Brain was prostration .
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