Nervous system chapter 12

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Nervous system chapter 12

  1. 1. Nervous System Nighat Ali BIOS120 – Medical Terminology Professor Rashidah Abdullah 11/04/2012
  2. 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
  3. 3. Nervous System SuffixesThis presentation will focus on two suffixes relative to the nervous system –phasia –esthesia
  4. 4. –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.
  5. 5.  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.
  6. 6. Picture of where Brocas aphasia andWernickes aphasia are
  7. 7. –esthesia: suffix forfeeling/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
  8. 8.  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.
  9. 9. THE END Hope you enjoyed and learned Thank you!!!

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