PSYCH 454: Chapter 15 Terms: Tumors, Seizure Disorder, Cerebrovascular Accidents
24 Cards in this Set
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TumorA mass of cells whose growth is uncontrolled and that serves no useful function
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A mass of cells whose growth is uncontrolled and that serves no useful function
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Malignant Tumor
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A cancerous tumor; lacks a distinct border and may metastasize.
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Benign Tumor
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A non-cancerous tumor; has a distinct border and cannot metastasize
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Metasis
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The process by which cells break off of a tumor, travel through the vascular system, and grow elsewhere in the body.
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Glioma
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A cancerous brain tumor composed of one of several types of glial cells
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Mengioma
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A benign brain tumor composed of the cells that constitute the meninges.
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Seizure Disorder
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The preferred term for epilepsy.
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Convulsion
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A violent sequence of uncontrollable muscular movements caused by a seizure.
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Partial Seizure
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A seizure that begins at a focus and remains localized, not generalizing to the rest of the brain
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Generalized Seizure
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A seizure that involves most of the brain, as contrasted with a partial seizure, which remains localized.
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Simple Partial Seizure
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A partial seizure, starting from a focus and remaining localized, that does not produce loss of consciousness
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Complex Partial Seizure
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A partial seizure, starting from a focus and remaining localized, that produces loss of consciousness.
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Grand mal Seizure
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A generalized, tonic-clonic seizure, which results in a convulsion.
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Aura
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A sensation that precedes a seizure; its exact nature depends on the location of the seizure focus.
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Tonic Phase
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The first phase of a grand mal seizure, in which all of the patient's skeletal muscles are contracted.
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Clonic Phase
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The phase of a grand mal seizure in which the patient shows rhythmic jerking movements.
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Absence
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A type of seizure often seen in children characterized by periods of inattention, which are not subsequently remembered; also called petit mal seizure.
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Status Epilepticus
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A condition in which a patient undergoes a series of seizures without regaining consciousness.
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Hemorrhagic Stroke
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A cerebrovascular accident caused by the rupture of a cerebral blood vessel.
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Obstructive Stroke
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A cerebrovascular accident caused by occlusion of a blood vessel.
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Ischemia
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The interruption of the blood supply to a region of the body.
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Thrombus
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A blood clot that forms within a blood vessel, which may occlude it.
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Embolus
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A piece of matter (such as a blood clot, fat,, or bacterial debris) that dislodges from its site of origin and occludes an artery; in the brain an embolus can lead to a stroke.
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Free Radical
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A molecule with unpaired electrons; acts as a powerful oxidizing agent; toxic to cells.
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