NURS 5463 Module 7 Test: Questions & Answers: Updated A+ Score Guide

What does the anterior cerebral circulation supply blood too? (Ans- The internal carotid, middle anterior cerebral arteries supply blood to the frontal, parietal, temporal lobes, basal ganglia, thalamus, hypothalamus What does the posterior cerebral circulation supply blood too? (Ans- 2 vertebrobasilar artery supply mid and lower temporal and occipital lobes, cerebellum, brainstem and part of diencephalon (thalamic) The Circle of Willis. (Ans- A structure at the base of the brain that is formed by the joining of the carotid and basilar arteries. ACA: anterior cerebral artery (Ans- -relatively uncommon stroke -contralateral hemiplegia and sensory impairment, particularly of the LE at the knee or below, toes -impaired gait -flat affect -cognitive impairment -urinary incontinence MCA (middle cerebral artery) (Ans- -most commonly involved in cerebral occlusion -feeds parietal and temporal lobes -contralateral neurological symptoms -visual and sensory neglect on opposite side -global aphasia PCA-posterior cerebral artery (Ans- -damage to PCA affects temporal and occipital lobes of upper brain stem -cortical blindness-total or partial loss of vision in "normal" eye 2nd to damage to occipital cortex -Anton-Babinski Syndrome-pt may not know they are blind -lack of depth perception -inability to see objects not centrally located -visual hallucinations vertebral artery (Ans- -difficulty swallowing and speaking -impairment of pain and temperature sensation -cerebellar symptoms-muscular weakness, dizziness, or ataxic gait Right hemisphere (Ans- -hemiplegia on left side of th body -spatial perception deficits -neglect on affected side -distractibility -impulse behavior -poor judgement -left visual field deficits left hemisphere of brain (Ans- -controls right side of the body and right visual fields -logical, contains mathematics, language, & speech -stroke causes expressive, receptive or global aphasia -Intellectual impairment -slow cautious behavior-deliberate frontal lobe function (Ans- -involved in motor function: problem solving, memory, judgment, impulse control -stroke causes difficulty sequencing, problem solving -preservation-repetition word, phrase, or gesture -attention deficits, expressive aphasia -personality changes-uncontrollable, emotional, social and sexual behavior changes -poor involuntary movements