PSYB64H3 Chapter Notes - Chapter 15: John Olney, Blood Vessel, Thrombosis
Document Summary
Soccer players perform worse on tests for attention, memory, and planning compared to swimmers and track athletes. Sortland and tysvaer (1989) using ct found that 1/3 of former norwegian national soccer members had cerebral atrophy: most likely the source of injury is from heading the ball. It is reported that the greatest cognitive deficits occurred among players who headed the ball frequently. Brain is protected by skull bones/meninges, cerebrospinal fluid (csf), and blood-brain barrier. Damage can occur due to interruptions in the blood supply and head injuries. Cells in nervous system (ns) rely on oxygen which is supplied by rich network of blood vessels: circulation of blood to neural tissue can be ruptured/blocked and that can cause serious damage to brain. Cerebral hemorrhage (bleeding in the brain) condition caused by bleeding in the brain: generally results from hypertension (high blood pressure) or structural defects in arteries serving brain. Ischemia (low oxygen level) blockage of blood vessels result in ischemia .
