NURS113 Study Guide - Midterm Guide: Hypokinesia, Gliosis, Striatum
23 Feb 2017
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Internal carotid + vertebral arteries enter through the foramen magnum. Medial (frontal, temporal, parietal lobe) / contralateral lower limb. Lateral (frontal, temporal, parietal) lobe / contralateral upper limb, face. Medial and lateral aspects of occipital lobe / vision: sudden/abrupt blockage of blood vessel, if the common branch, or a big vessel is blocked. There is an alternate pathway if blood/oxygen supply to the brain is cut off through one route. However, people can still get a stroke due to: Blood supply due to blood vessel blockage. Most common cause of stroke (70-80% of cases) Thrombus: outside, deep vein thrombosis (usually in legs) can dislodge and cause pulmonary / cerebral embolism, due to: Textured due to atherosclerosis (fat deposition) / arteriosclerosis (hardening of arteries) Dehydration (esp. d. mellitus - glucose = osmotic pressure ) Cholesterol / triglycerides blood gets thicker. Smaller piece dislodged from thrombus which travels to another location in the blood vessel. Foreign bodies (air through iv - iatrogenic)
