The Nervous The Nervous SystemSystem

Did you know?Did you know?

Menigitis- inflammation of the Menigitis- inflammation of the meniges caused by bacteria, viral or meniges caused by bacteria, viral or fungal infections. fungal infections.

Subdural Hematoma- large blood clot Subdural Hematoma- large blood clot found in under the dura mater. found in under the dura mater. Usually sign of trauma.Usually sign of trauma.

Disorders of the BrainDisorders of the BrainStrokeStroke

Usually because of a clot there is a cessation of Usually because of a clot there is a cessation of blood to the brain and the region is starved of blood to the brain and the region is starved of oxygen.oxygen.

Hemiplegia- paralysis on one side of the body.Hemiplegia- paralysis on one side of the body.

Huntington diseaseHuntington disease Involuntary movements, dementia and deathInvoluntary movements, dementia and death

Creutzfeldt-JakobCreutzfeldt-Jakob Human mad cow disease. A prion causes Human mad cow disease. A prion causes

protein denaturization in the brain.protein denaturization in the brain.

SeizuresSeizures sudden burst of neuron activity. Epilepsy is sudden burst of neuron activity. Epilepsy is

chronic seizure, normally idiopathic.chronic seizure, normally idiopathic.

Brain Dysfunctions

1. Slight and transient brain injury

2. Traumatic injury that destroys brain tissue

3. Total nonresponsiveness to stimulation

4. May cause medulla oblongata to be wedged into foramen magnum by pressure of blood

C. Cerebrovascular C. Cerebrovascular accident (CVA)accident (CVA)

F. F. ContusionContusion

D. D. ComaComa

E. ConcussionE. Concussion

5. After head injury, retention of water by brain

6. Result when a brain region is deprived of blood or exposed to prolonged ishemia

7. Progressive degeneration of the brain with abnormal protein deposits

8. Autoimmune disorder with extensive demyelination

9. A ministroke; fleeting symptoms of a CVA

B. Cerebral B. Cerebral edemaedema

G. Intercranial G. Intercranial hemorrhagehemorrhage

A. Alzheimer’s A. Alzheimer’s diseasedisease

H. Multiple H. Multiple sclerosissclerosis

I. Transient ischemic I. Transient ischemic attack (TIA)attack (TIA)

Spinal Cord Spinal Cord InjuriesInjuries

Disorders of Disorders of PNSPNSShingles(herpes Shingles(herpes

zoster) is a viral zoster) is a viral infection usually infection usually caused by the caused by the varicella virus varicella virus (chicken pox)(chicken pox)It usually affects It usually affects

a specific region a specific region of skin of skin innervated by a innervated by a given spinal given spinal nervenerve

Disorders of PNSDisorders of PNS

SciaticaSciatica Causes severe pain Causes severe pain

in the leg caused in the leg caused by compression, by compression, irritation, or irritation, or inflammation of the inflammation of the sciatic nerves, sciatic nerves, which are thick which are thick nerves extending nerves extending down the back of down the back of each leg. each leg.

Disorders of PNSDisorders of PNSNeurofibromatosisNeurofibromatosis Tumors start in Tumors start in

the schwann the schwann cells of the cells of the peripheral peripheral nervous sysnervous sys

Tumors can be Tumors can be mild or mild or disfiguringdisfiguring