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Chapter 14

Human Brain - Chapter 14.docx

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Department
Psychology
Course Code
PSYB65H3
Professor
Ted Petit

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Chapter 14Human Brian Damageeven successful rehabilitation is not restoration tot eh previous statelearning of new was to do the required learned tasks more to do with compensation that recoveryrestoringMODULE Causes of Brain Damage Tumors mass of new and abnormal tissue that is not physiologically beneficial to its surrounding structures akak neoplasmsnew tissespaceoccupying lesionsforeign objects that cause damage to the CNS by putting pressure on it and occupying space that is normally occupied by the CNS second most common site for tumors uterustumors differtipe of cell that cause grow rate whether they infiltrate and destroy the surrounding neural tissue or remain relatively encapsulated and how likely they are to recur if they are removedencapsulatedtumor that has clear bordersinfiltratetumor that moves into neural tissue w no clear boundaries benign tumorsnot likely to reoccur and good prognosis associated w it malignantmore likely to reoccur and has a poor prognosis four major types of brain tumors o originate form glial cells the meninges nervous system or other parts of the body already affected w a tumorTumors rising form glial cellsgliomastumors that arise form glial cells most common brain tumorstwo typeso Astrocytomas slowgrowing benign tumors that arise form the growth of astrocytes rarely malignantrelatively encapsulateddamagage tends to come form compression of the surrounding tissues other infiltrate the surrounding neural tissueprognosis is good after removal not if in inaccessible locationif not surgery then chemotheraphy o Glioblastoma quickgrowing malignant tumor opposite of aboveinfiltrate the surrounding tissueso diff to remove wo removing healthy surrounding neural tissue chemooften o Medulloblastoma a rare but malignant infiltrating tumor that tends to occur in the cerebellum and brainstem early in life since close to brainstem structures that support vegetative functionsprognosis is poor chemo Tumors arising from meninges tumors that grow out of and remain attached to the meningesgrow out of dura matter forming a ovoid shapewhich are outside the CNS o tend to be encapsulatedo effects tend to be form the pressure applied at the site of the tumor as well as sites distal form the tumor o most benign some can be malignant surgery is best option location
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