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NERVOUS SYSTEM
WHAT ARE NERVES?
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Nerve: A nerve is a
chord that carries
different axons.
A nerve is that chord
that carries feelings in
your body to your
brain.
TYPES OF PERIPHERAL NERVES
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There are three types of
nerves. They are Motor,
Sensory, and Autonomic.
The motor nerves send
signals from the brain to all
of the muscles in your body.
The sensory nerves send
signals the opposite way,
from your muscles to your
spinal chord and to your
brain.
The Autonomic nerves
controls functions, such as
heart rate, blood pressure,
digestion, and sweating.
NERVE DAMAGE SYMPTOMS
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Some of the symptoms of
Autonomic nerve damage are dry
eyes, dry mouth, constipation,
bladder dysfunction, and sexual
dysfunction
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Weakness, muscle atrophy,
twitching, or paralysis are all
symtoms of damage to your motor
nerves.
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Sensory nerve damage could
result in pain, sensitivity,
numbness, tingling or prickling,
burning, and problems with
positional awareness.
WHAT CAUSES NERVE PAIN AND
NERVE DAMAGE?
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There are a lot of different
types of nerve damage. The
different types may have
different symptoms and may
require different types of
treatment.
More than 20 million
Americans have peripheral
nerve damage. This damage
becomes more common
when you get older. In one
out of every 3 people with
peripheral nerve damage, the
damage comes from
diabetes.
Fun Facts About Nerves
- There are more nerve cells in the human brain than there are stars in the Milky Way.
- If we lined up all the neurons in our body it would be around 600 miles long.
- There are 100 billion neurons in your brain alone.
- A newborn baby's brain grows almost 3 times during the course of its first year.
- The left side of human brain controls the right side of the body and the right side of the brain
controls the left side of the body.
- A New born baby loses about half of their nerve cells before they are born.
- As we get older, the brain loses almost one gram per year.
- There are about 13, 500,00 neurons in the human spinal cord.
- The total surface area of the human brain is about 25, 000 square cm.
- The base of the spinal cord has a cluster of nerves, which are most sensitive.
- An average adult male brain weighs about 1375 grams.
- An average adult female brain is about 1275 grams.
- Only four percent of the brain's cells work while the remaining cells are kept in reserve.
- Neurons do not under go mitosis
- Neurons are the largest cells in the human body. (They can be up to 3 feet long)
- The Nervous System can transmit impulses as fast as 100 meters per second.
- Potassium and sodium ions are vital to the proper functioning of the Nervous System
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