The nervous system is made up of the central nervous system (brain and spinal cord) and the peripheral nervous system. The presentation focuses on two suffixes related to the nervous system: -phasia, relating to speech, and -esthesia, relating to sensation. Aphasia refers to loss of ability to communicate through language and can result from stroke or head injury. Paresthesia is a burning or tingling sensation that can be a symptom of neurological disorders or nerve damage. Hyperesthesia is increased sensitivity of the senses.

1. Nervous System
Nighat Ali
BIOS120 – Medical Terminology
Professor Rashidah Abdullah
11/04/2012

2. What is Nervous System?
 The nervous system is a complex network of
nerves and cells that carry messages to and from
the brain and spinal cord to various parts of the
body.
 The nervous system includes both the Central
nervous system and Peripheral nervous system.
The Central nervous system is made up of the
brain and spinal cord. The Peripheral nervous
system is made up of the Somatic and the
Autonomic nervous systems

4. Nervous System Suffixes
This presentation will focus on two suffixes relative
to the nervous system
 –phasia
 –esthesia

5. –phasia: suffix for speech
 Aphasia is a condition that takes away the
ability to communicate. It can affect your
ability to express and understand language,
both verbal and written. It occurs after a
stroke or a head injury, but can also come on
gradually from a slowly growing brain tumor or
a degenerative disease. The amount of
disability depends on the location and the
severity of the brain damage.

6.  Dysphasia is a language problem caused by
stroke or other brain damage in the left side of the
brain. It is characterized by complete or partial
loss of language function including ability to
understand, speak, read and write. All of these
areas will be impaired to some extent, however,
some areas may be affected more than others
may. The type of severity of the language
problem will depend on which part of the brain
has been damaged.

7. Picture of where Broca's aphasia and
Wernicke's aphasia are

8. –esthesia: suffix for
feeling/sensation
 Paresthesia refers to a burning or prickling
sensation that is usually felt in the hands, arms,
legs, or feet, or anywhere in the body. The
sensation, which happens without warning, is
often described as tingling or numbness, skin
crawling, or itching, burning pain. Chronic
Paresthesia is often a symptom of an underlying
neurological disease or traumatic nerve damage.
Paresthesia can be caused by disorders affecting
the central nervous system, such as Multiple
Sclerosis and also by a tumor or vascular lesion
pressed up against the brain or spinal cord.
Paresthesia can last for little or long time. The
numbness and tingling can vary in intensity and
can come at different times of the day. It can feel

10.  Hyperesthesia is somatosensory disorder that
involves an abnormal increase in sensitivity
to stimuli of the senses. Stimuli of the senses can
include sound that one hears, foods that one
tastes, textures that one feels, and so forth.
Increased touch sensitivity is referred to as
"tactile hyperesthesia", and increased sound
sensitivity is called "auditory hyperesthesia".
 Tactile hyperesthesia can be a symptom of
neurologic disorders such as herpes zoster and
peripheral neuropathy.

11. THE END 
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