Page 82 - Life Insurance underwriting Ebook IC 22

Meninges: The meninges consist of 3 layers of protective membranes which
complete- enclose the brain and the spinal cord:
 The dura mater
 The arachnoids
 The pia mater

d) Cerebro-spinal fluid

The cerebro-spinal fluid which circulates around the brain and spinal cord is a
clear, colorless liquid consisting of water, oxygen, sodium, potassium, calcium,
magnesium, glucose and proteins. This fluid acts as a shock absorber to
potential
blows and sudden movements, allowing the brain to float in a cushioned space
In addition to its protective cushioning effect; the cerebro-spinal fluid transports
nutrients to the brain cells of the brain and carries waste products away.

4. Know about the common disorders of the nervous system.

4.1 Compton disorders of the nervous system

Some of the common disorders of the nervous system are as follows:

 Vascular disorders
 Infections
 Structural disorders
 Functional disorders
 Degeneration
 Congenital

4.2Common signs and symptoms of' nervous system disorders

The following are the most common sleds and symptoms of nervous system
disorders. However, each individual may experience symptoms differently.
Symptoms may include:

 persistent or sudden onset of a headache
 a headache that changes or is different
 loss of sense of feeling or tingling,
 weakness or loss of muscle strength
 sudden loss of sight
 memory loss
 impaired mental ability
 lack of coordination
 muscle rigidity\
 tremors and seizures
 back pain which radiates to the feet, toes or other parts of the body

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