Textbook Notes (363,559)
Canada (158,426)
Psychology (1,867)
PSY290H5 (64)
Chapter 15

Chapter 15 Textbook Notes - Neurological Disorders

7 Pages
Unlock Document

University of Toronto Mississauga
Ayesha Khan

Notes From Reading CHAPTER 15 NEUROLOGICAL DISORDERS PGS 430455 Brain DamageThe cerebrospinal fluid and the bloodbrain barrier provide to the brain provide significant protectionDamage can occur due to interruptions in the blood supply and from blows to the headGrowth of tumors and abnormal electrical activity of seizures can also interrupt normal brain functioning LO1 Describe the major features of stroke StrokeStrokeA type of brain damage caused by an interruption of the blood supply to the brain o Interrupted by either bleeding or by the sudden blockage of a blood vessel o Risk factors age hypertension smoking dilates high cholesterol obesity and the use of alcohol cocaine amphetamines heroin and other drugs o Risk is increased when arteries are narrowed gradually by conditions such as arteriosclerosis or hardening of the arteries Cerebral HemorrhageA condition caused by bleeding in the brain o Generally results from hypertension high blood pressure or structural defects in the arteries serving the brain o Can occur due to the rupture of AneurysmsA balloonlike bulge in the wall of an arteryo Frequently fatal due to the brain damage they produce by interfering with the blood supply to neurons and by flooding areas of the brain with salty blood that dehydrates and kills nearby neuronsIschemiaA condition in which inadequate blood flow results in insufficient quantities of oxygen being delivered to tissue o Often results from infarctAn area of dead neural tissue o Infarct can cause changes in consciousness sensation or the ability to move depending on their size and location o Transient Ischemic Attacks TIAsA brief 24hourorless episode of stroke symptoms that does not cause permanent damageThrombosisA blockage that doesnt move from its point of origin in a blood vesselEmbolismA blood vessel blockage that originated elsewhere and traveled to its current locationCell death following many strokes is largely caused by excess glutamate activity triggered by disruptions in the delivery of oxygenPenumbraThe area of tissue surrounding an infarct LO2 Distinguish among open head injuries concussions and chronic traumatic brain injuries CTBIs Head InjuriesTraumatic Brain Injuries TBIPhysical Damage to the brain o Leading causes traffic accidents gunshot wounds and fallsOpen Head InjuriesA head injury in which the brain is penetrated as in a gunshot woundo Injuries involve damage to ventricles both hemispheres or multiple lobes of the brain are most likely to result to deathConcussionsA head injury that results from a blow to the head without penetration of the brain or from a blow to another part of the body that results in force transmitted to the braino Range from mild no or very brief periods of unconsciousness to severe coma o Behavioural physical and cognitive consequences often last for months and can be permanento CoupAn area of brain damage at the site of the blow to the head o CountercoupAn area of brain damage that occurs on the opposite side of the head from the original site of the blow or coup o Subdural hematomaA mass of clotted blood like a bruise that forms between the dura mater and arachnoid following a head injuryPostconcussion Syndrome PCSA set of symptoms that follow concussion for a period of days to years including headache cognitive deficits and emotional changes
More Less

Related notes for PSY290H5

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.