Nervous System

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Nervous System

• Unit
• 6.8
• Pages 104 -108

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Key Terms

• autonomic nervous system
• brain
• central nervous system
• cerebrum
• diencephalon
• hypothalamus
• medulla oblongata

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Terms (cont....)

• cerebellum
• meninges
• midbrain
• nerves
• neuron
• parasympathetic
• peripheral nervous system

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Terms (cont....)

• pons
• spinal cord
• sympathetic
• thalamus
• ventricles
• ganglia

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Nervous System

• Definition of nervous system
• complex highly organized
• coordinates activities of the body
• enables body to respond and adapt

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Structures of the Nervous System

• Neurons
• basic structural unit
• contains a nucleus
• dendrites
• axon
• myelin sheath
• synapse

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Nervous System Structure

• Nerves
• combination of nerve fibers
• Afferent nerves
• Efferent
• Connecting Nerves

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Central Nervous System

• Brain
• cerebrum
• cerebellum
• diencephalon
• thalamus
• hypothalamus
• Midbrain
• pons
• medulla oblongata

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Central Nervous System

• Spinal Cord
• Meninges
• dura mater
• arachnoid membrane
• pia mater
• Ventricles
• Cerebrospinal Fluid

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Peripheral Nervous System

• Peripheral Nervous System
• somatic
• 12 pairs cranial nerves
• 31 pairs of spinal nerves
• autonomic nervous system
• sympathetic
• parasympathetic

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Diseases and Disorders

• Cerebral Palsy
• disturbance in voluntary muscle action
• caused by brain damage
• Three forms
• spastic
• athetoid
• atactic
• Symptoms
• Treatment

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Diseases and Disorders

• Cerebrovascular Accident (CVA)
• also called stroke
• occurs when blood flow to the brain is impaired
• results in lack of oxygen and destruction of
  brain tissue
• Causes
• Symptoms
• Treatment

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Diseases and Disorders

• Encephalitis
• inflammation of the brain
• Causes
• Symptoms
• Treatment

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Diseases and Disorders

• Epilepsy or seizure syndrome
• abnormal electrical impulses
• Causes
• Types of seizures
• idiopathic
• petit mal
• partial or Jacksonian
• tonic - clonic or grand mal
• Symptoms

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Diseases and Disorders

• Hydrocephalus
• excessive accumulation of spinal fluid
• Symtoms
• Treatment
• Meningitis
• inflammation of meninges
• Symptoms
• Treatment

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Multiple Sclerosis

• Chronic, progressive, disabling
• Cause Unknown
• Early Symptoms
• Disease Progress
• Treatment

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Neuralgia and Paralysis

• Nerve pain
• Causes
• Treatment
• Brain and spinal cord
• Hemiplegia
• Paraplegia
• Quadriplegia
• Treatment

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Diseases and Disorders

• Parkinsons Disease
• chronic, progressive
• Symptoms
• Levodopa
• Treatment

• Shingles
• herpes zoster
• inflammation nerve cells
• Symptoms
• Treament

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