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nervous system


- an acute inflammation of the pia mater and arachnoid layers meningitis
- a viral infection of the brain and meninges caused by the herpes simplex virus encephalitis
What usually results of chronic infections of the sinuses, middle ear, mastoids or systemic infections? brain abscess
What is the most common cause of a subdural empyema? is the spread of infection from frontal or ethmoid sinuses
What is the most common primary malignant brain tumor? glioma
What is the most common type of glioma? astrocytoma
- benign tumors that arise from arachnoid lining cells and are attached to the dura meningiomas
- slow growing, benign tumor that occurs on the eighth cranial nerve acoustic neuroma
- cause enlargement of the sella turcica and erosion of the dorsum sellae pituitary adenomas
What are the most common malignancies that metastasize to the brain? lung and breast
What causes epidural hematomas caused by? arterial bleeding in the cranium
What causes subdural hematomas? venous bleeding in the cranium
What kind of fractures are the most common facial bone fractures? nasal bone
- when the zygoma is separated from the other facial bones tripod fracture
Which projection is useful in demonstrating fractures of the zygomatic arches? submentalvertical projection
What causes a blow-out fracture? direct blow to the orbit
bilateral and horizontal fractures of the maxillae are called? LeFort fracture
- sudden and dramatic development of a focal neurologic deficit stroke
-paralysis on one side of the body can be a symptom of a stroke, called... hemiplegia
- focal neurologic defects that completely resolve within 24 hrs transient ischemic attacks ( TIA )
What is a major cause of subarachnoid hemorrhage? rupture of a berry aneurysm
What is the most common cause of nontraumatic intraparenchymal hemorrhage in patients under the age of 20? arteriovenous malformations (AVM)
- a condition in which brain impulses are distrurbed and causes symptoms ranging from loss of consciousness to violent seizures epilepsy
- a degenerative neurologic disease that causes widespread selective atrophy and loss of motor nerves that eventually leads to paralysis and death amyotrophic lateral sclerosis
Created by: erikasmith28