Central Nervous Systems And The Peripheral Nervous System Essay

Central Nervous Systems And The Peripheral Nervous System Essay

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The nervous system is made up of two major parts: the central nervous system and the
peripheral nervous system.
The central system is the main command center for the body and is comprised of the brain and
spinal cord. The peripheral nervous system contains a network of nerves that connect the rest of
the body to the central nervous system. The central nervous system and the peripheral nervous
system work together to collect information from within the body and from the environment
outside it. The systems process all the collected information and send instructions to the rest of
the body, to obtain an appropriate response. The brain is the final stopping point for the
information gathered by the rest of the nervous system, once the data arrives, the brain will sort
and file it before sending out any commands on what to do.
Although the brain is the control center, its job would not be possible without the spinal cord,
which is the major organ for information traveling between brain and body. Peripheral system
nerves branch from either the brain stem or the spinal cord, each nerve is connected to a
particular area of the torso or limbs and is responsible for communication to and from those
regions. There are three main functions of the nervous system: sensory, integration, and motor.
Sensory neurons detect internal or external changes and send the message to the brain or spinal
cord. Integrations when the brain or spinal cord will process and interpret the message from the
sensory neurons, and relay the message back to body parts. Motor neurons receive the messages
from interneuron and will produce a response at the effected organ.
NERVOUS SYSTEM 3
The two divisions of the nervous system
The central nervous system is the processing...


... middle of paper ...


...the
various functions of the body while the sensory organs detect the various stimuli in the
environment that it reacts to. Functions are voluntarily or involuntarily controlled:
Voluntary control occurs when one 's response to activity or stimulus, has a choice of what
actions it may take. It can choose to respond in one way or another, such as to move a particular
part of its anatomy. The nerves that make up this voluntary part of the nervous system are called
voluntary, or somatic nerves.
Involuntary control is where one has no choice in the response to an activity or event that occurs
without having any conscious control. Examples of this part of the nervous system are the
regulation of heartbeat, circulation, digestion, and respiration. The part of the nervous system
that regulates such important functions is called the autonomic, or involuntary, nervous system.

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