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Nervous System
UnitUnit
6.86.8
Pages 104 -108Pages 104 -108
Key Terms
autonomic nervous systemautonomic nervous system brainbrain central nervous systemcentral nervous system cerebrumcerebrum diencephalondiencephalon hypothalamushypothalamus medulla oblongatamedulla oblongata
Terms (cont....)
cerebellumcerebellum meningesmeninges midbrainmidbrain nervesnerves neuronneuron parasympatheticparasympathetic peripheral nervous systemperipheral nervous system
Terms (cont....)
ponspons spinal cordspinal cord sympatheticsympathetic thalamusthalamus ventriclesventricles gangliaganglia
Nervous System
Definition of nervous system Definition of nervous system – complex highly organizedcomplex highly organized– coordinates activities of the bodycoordinates activities of the body– enables body to respond and adaptenables body to respond and adapt
Structures of the Nervous System
Neurons Neurons – basic structural unitbasic structural unit– contains a nucleuscontains a nucleus– dendritesdendrites– axonaxon– myelin sheathmyelin sheath– synapsesynapse
Nervous System Structure
Nerves Nerves – combination of nerve fiberscombination of nerve fibers– Afferent nervesAfferent nerves– EfferentEfferent– Connecting NervesConnecting Nerves
Central Nervous System
BrainBrain– cerebrumcerebrum– cerebellumcerebellum– diencephalondiencephalon
thalamusthalamus hypothalamushypothalamus
– MidbrainMidbrain– ponspons– medulla oblongatamedulla oblongata
Central Nervous System
Spinal CordSpinal Cord MeningesMeninges
– dura materdura mater– arachnoid membranearachnoid membrane– pia materpia mater
VentriclesVentricles Cerebrospinal FluidCerebrospinal Fluid
Peripheral Nervous System
Peripheral Nervous SystemPeripheral Nervous System– somatic somatic
12 pairs cranial nerves12 pairs cranial nerves 31 pairs of spinal nerves 31 pairs of spinal nerves
– autonomic nervous systemautonomic nervous system sympatheticsympathetic parasympatheticparasympathetic
Diseases and Disorders
Cerebral PalsyCerebral Palsy– disturbance in voluntary muscle action disturbance in voluntary muscle action
– caused by brain damagecaused by brain damage
– Three formsThree forms spasticspastic athetoidathetoid atacticatactic
– SymptomsSymptoms
– TreatmentTreatment
Diseases and Disorders
Cerebrovascular Accident (CVA)Cerebrovascular Accident (CVA)– also called strokealso called stroke– occurs when blood flow to the brain is impairedoccurs when blood flow to the brain is impaired– results in lack of oxygen and destruction of results in lack of oxygen and destruction of
brain tissuebrain tissue– CausesCauses– SymptomsSymptoms– TreatmentTreatment
Diseases and Disorders
EncephalitisEncephalitis– inflammation of the braininflammation of the brain– CausesCauses– SymptomsSymptoms– TreatmentTreatment
Diseases and Disorders
Epilepsy or seizure syndromeEpilepsy or seizure syndrome– abnormal electrical impulses abnormal electrical impulses
– CausesCauses
– Types of seizuresTypes of seizures idiopathicidiopathic petit malpetit mal partial or Jacksonianpartial or Jacksonian tonic - clonic or grand maltonic - clonic or grand mal
– SymptomsSymptoms
Diseases and Disorders
Hydrocephalus Hydrocephalus – excessive accumulation of spinal fluidexcessive accumulation of spinal fluid– SymtomsSymtoms– TreatmentTreatment
MeningitisMeningitis– inflammation of meningesinflammation of meninges– SymptomsSymptoms– TreatmentTreatment
Multiple Sclerosis
Chronic, progressive, disablingChronic, progressive, disabling Cause UnknownCause Unknown Early SymptomsEarly Symptoms Disease ProgressDisease Progress TreatmentTreatment
Neuralgia and Paralysis
Nerve painNerve pain CausesCauses TreatmentTreatment
Brain and spinal cord Brain and spinal cord HemiplegiaHemiplegia ParaplegiaParaplegia QuadriplegiaQuadriplegia TreatmentTreatment
Diseases and Disorders
Parkinson’s DiseaseParkinson’s Disease chronic, progressivechronic, progressive SymptomsSymptoms LevodopaLevodopa TreatmentTreatment
ShinglesShingles herpes zosterherpes zoster inflammation nerve inflammation nerve
cellscells SymptomsSymptoms TreamentTreament
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