PSY290H1 Chapter Notes - Chapter 10: Vestibulocochlear Nerve, Brain Damage, Neurotransmitter
Document Summary
Causes of brain damage: brain tumors. Meningiomas (between mininges) growing within their own membrane, easy to identify, influence based on pressure they create, benign or surgically removable. Infiltrating (grow through surrounding tissue) malignant or difficult to destroy. May not always grow in brain i. e. metastic tumors (from one organ to another) Encapsulated tumors on cranial nerve viii are acoustic neuromas: cerebrovascular disorders: strokes. Amnesia, aphasia (language problems), paralysis, and coma. Produces dead tissue called infarct surrounded by penumbra. Cerebral hemorrhage blood vessel rupture, bursting aneurysm (can be congenital or owing to infections) Contusions cerebral circulatory system damage resulting in a hematoma brain slams against skull and blood can accumulate between dura mater and arachnoid membrane (subdural space), can occur on opposite side of injury (countercoup injuries) Concussion repeated can cause punch-drunk syndrome. Rabies affinity for the nervous system. Mumps and herpes can attack nervous system, but have no: neurotoxins affinity for an attach.
