Nervous System Dr.Hannah

 The nervous system is a very complex system in the body.  The nervous system is the body's information gatherer, storage center and control system.

 and is often likened to the central computer within a vast, complicated communication network  Its divided into two parts  Central nervous system (CNS)  Peripheral nervous system (PNS)

 CNS: consists of the brain and the spinal cord  PNS: includes the nerves that carry messages to and from the brain and spinal cord

COMBINING FORM MEANING  Cerebell/o  Cerebr/o  Encephal/o  Cerebellum  Cerebrum  Brain

COMBINING FORMMEANING  Medull/o  Myel/o  Neur/o  Medulla oblongata  Spinal cord  nerve

 Alzheimer disease: deterioration of mental capacity-which can lead to dementia.  Cerebrovascular accident: damage of the blood vessels supplying brain- stroke  Concussion: Blunt injury to the brain which causes loss of consciousness

 Epilepsy: chronic brain disorder characterized by recurrent seizure activity  Glioblastoma: brain tumour from glial cells  Hemiplegia: plegia-paralysis, hemi- one half. Usually result of stroke

 Meningitis: Inflammation of the meninges  Multiple sclerosis: destruction of myelin sheath on nerve cells in central nervous system  Paraplegia: paralysis affecting lower part of the body. Plegia-paralysis, para-one side

 Syncope: fainting; inadequate blood supply to the brain. ( NOT the loss of the blood supply like in a stroke)

 Cerebral angiography: X-Ray of the brain + contrast in the artery.

 Computed Tomography (CT) scan: cross sectional X-Ray. Good for detecting of haemorrhage in a brain cavity

Electroencephalography: recording of electrical activity within the brain Lab and Diagnostic procedures

 Lumbar Puncture (LP): spinal tap procedure by which CSF is removed.  Cerebrospinal fluid analysis: blood cells, glucose, cultures, Gram stain, chemical composition. Obtained through Lumbar Puncture (LP)  Magnetic resonance imagine (MRI): magnetic waves and radiofrequency are used to create images

 Positron emission tomography (PET) scan: uptake of radiographic material into the brain shows how the brain uses glucose and gives info on how the brain functions

 Stereotactic radiosurgery: It is a form of radiation therapy that focuses high- powered x-rays on a small area of the body. Involve the placement of a stereotactic instrument in the skull that locates the target in the brain. Then high-energy radiation beam is delivered to that target to destroy tissue.  Transcutaneous electrical nerve stimulation (TENS): a battery powered device delivers stimulation to the nerve to relieve acute or chronic pain.

o AD o CNS o CSF o CVA o EEG o LP o MS o TIA  Alzheimer disease  Central nervous system  Cerebrospinal fluid  Cerebrovascular accident  Electroencephalography  Lumbar puncture  Multiple sclerosis  Transient ischemic attack