Final Study Guide

Final Study Guide - BioPsych. Final Study Guide Stroke...

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BioPsych. Final Study Guide Stroke stroke- another term for cerebral vascular accident, or brain damage due to an interruption of the blood supply to the brain cerebral hemorrhage - bleeding in the brain results from: hypertension, structural defects in the arteries serving the brain, exposure to toxic chemicals, or leukemia some result from: aneurysms (bulge in the wall of artery) interfere with the blood supply to neurons and flooding areas of the brain with salty blood and kills nearby neurons- they are frequently fatal cerebral ischemia - a condition in which inadequate blood flow results in insufficient quantities of oxygen being delivered to tissue thrombosis - a blockage in a blood vessel that doesn't move from its point of origin aneurysms- balloon like bulge in the wall of an artery infarct- the area of tissue that dies embolism- a blockage in a blood vessel that originated elsewhere and traveled to its current location Head Injuries open head injuries - head injury in which the brain is penetrated, as in a gunshot wound. depending on the area that is hit, differently affected concussion - closed head injury involving a loss of consciousness. occur in response to a blow to the head. mild to severe countercoup- damaged area of the brain that occurs on the opposite side of the head from the original site of the blow, or coup. dementia pugilistica- another name for chronic traumatic brain injury, or the condition that results from repeated closed head injuries. Brain Tumors gliomas- a tumor that develops from glial cells. meningiomas- a tumor arising from the tissue of the meninges. metastases- the migration of cancerous cells from one part of the body to another. Seizures and Epilepsy seizure- an uncontrolled electrical disturbance in the brain
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epilepsy- a disorder characterized by repeated seizure activity in the brain. a single seizure is not epilepsy partial seizure- a seizure that has clear area of origin, or focus, spreads outward. some are preceded by a premonition generalized seizure- seizure that affects the brain symmetrically without a clear point of origin. simple partial seizure- a seizure with symptoms that relate to the functions of the focal area, no accompanied by changes in consciousness complex partial seizure- normally begin in the temporal lobe and are associated with alterations in consciousness. the patient is likely to be very confused and will often have no memory of the seizure, might have sense of experiencing a past events grand mal generalized seizure- a tonic-clonic seizure; results in violent convulsions. begins with tonic phase, cessation of breathing-intense muscle contraction. followed by clonic phase, violent rhythmic contractions, person will sweat and salivate profusely. followed by a coma petit mal generalized seizure- a mild type of generalized seizure in which the patient
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Final Study Guide - BioPsych. Final Study Guide Stroke...

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