Concussion
Slight and transient brain injury
Contussion
Traumatic injury that destroys brain tissue
Coma
Total nonresponsivness to stimulation
Intracranial hemorrhage
May cause medulla oblongata to be wedged into foramen magnum by pressure of blood
Cerebreal edema
After head injury, retention of water by brain
Alzheimer's Disease
Progressive degeneration of the brain with abnormal protein deposits
Cerebrovascular accident (CVA)
Results when a brain region is depriced of blood or exposed to prolonged ischemia