Summary
Summary intro to neuroanatomy
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introduction to neuroanatomy
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The central nervous system consists of two important components,the central nervous system (CNS) and the peripheral nervous
system (PNS). The CNS collects information from the environment
and the entire body through the sensory system. It receives and
stores sensory input and integrates the new information with
previously stored information. It then decides on the appropriate
motor response to incoming sensory input. Additionally, the CNS
regulates thermoregulation.The visual pathway is a crucial
component of the CNS, and when someone new enters through the
door, the information is taken to the visual pathway. The CNS
compares the new image with past images to see if it recognizes
the person as a stranger or a familiar face.The PNS has some
differences from the CNS. The special senses, such as vision, are
generated only from specific parts of the body, while general
senses can be elicited from many parts of the body. For example,
touch can be felt from multiple parts of the body, making it a general
sense. However, sight is generated only from the eyes, and so it is
a special sense. Taste and smell are other examples of special
senses.In the motor system, the response is generated based on
the sensory input received. The response is the sound of the sound
that sounds like this, and one needs to be aware of it to hear it.
The tongue has both special and general sensations. Special sense
in the tongue allows for taste, while general sensations allow for
touch and temperature. Meanwhile, the sense of balance is another
special sense, which is controlled by the vestibular system of the
inner ear. Visceral sensations refer to sensations coming from deep
parts of the body, such as the GI tract, which can give sensations
such as abdominal cramps and diarrhea. Somatic sensations are
divided into pain, temperature, touch, vibration, and proprioception.
Proprioception is sensory information from joints, ligaments, and
skeletal muscles, which is computed by the cerebellum to create a
sense of position and helps in locomotion. The loco motor system,
which includes skeletal muscles, tendons, and ligaments, generates
motor responses to these sensations. Trillions of action potentials of
sensory information from multiple parts of the body, including
somatic and visceral sensations, go through the central nervous
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