Alzheimer's disease - ANS-a progressive and irreversible brain disorder characterized
by gradual deterioration of memory, reasoning, language, and, finally, physical
functioning
Epidural hemorrhage - ANS-A hemorrhage that occurs between the dura mater and the
skull, usually of traumatic origin. biconvex shape on CT. Arterial bleeding. Therefore
most fatal type
Subdural hemorrhage - ANS-bleeding between the arachnoid mater and the dura mater.
visualized as crescent shape on imaging. Venous bleeding.
subarachnoid hemorrhage - ANS-Accumulates between the arachnoid layer and the
thin pia mater that invests the brain (CSF occupies this area). Symptoms may include a
severe headache of rapid onset, vomiting, decreased level of consciousness, fever, and
sometimes seizures.
Cerebral Vascular Accident (CVA) - ANS-caused by interruption in blood flow to the
brain due to a blockage or bleeding in a cerebral artery
glioma - ANS-the most common primary malignant brain tumors consisting of _____
cells which are supporting connective tissue cells in the CNS.
cerebral contusions - ANS-injury to brain tissue caused by movement of the brain within
the calvaria after blunt trauma to the skull. Appears on CT scans as low-density areas of
edema and tissue necrosis.
concussion - ANS-a mild traumatic brain injury that affects your brain function. Effects
are usually temporary but can include headaches . Cannot be visualized through
imaging.
herniated disk - ANS-protrusion of a degenerated or fragmented intervertebral disk so
that the nucleus pulposus protrudes, causing compression on the nerve root
Hydrocephaly - ANS-dilatation of the ventricular system that is usually associated with
increased intracranial pressure.
Two types:
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