SCRN Exam with Review Questions and Verified Answers

SCRN Exam with Review Questions and Verified Answers A patient who can not speak fluently but can comprehend and repeat phrases has: a) Broca's aphasia b) Wernicke's aphasia c) Transcortical motor aphasia d) Transcortical sensory aphasia ANSWER C All of the following are true about Locked-in Syndrome except: a) It is typically a ventral pons lesion affecting bilateral corticospinal and corticobulbar tracts b) Vertical eye movements and eye openings are spared c) Spinal cord and cranial nerve receive no input from cortex d) Pontine infarcts initially result in dysarthria and clumsy-hand syndrome ANSWER D. A paramedian pontine infarct can cause dysarthria and clumsy-hand syndrome that affects the contralateral arm. However, this is not part of Locked-In Syndrome. Locked-In Syndrome is a near coma state where communication is possible through eye blinks. A lesion in the cerebellum will cause ________ upper extremity tremor. a) Ipsilateral b) Contralateral c) Bilateral d) No ANSWER A. Cerebellar circuits decussate twice before reaching the lower motor neurons. Therefore, each side of the cerebellum controls the same side of the body, not the opposite side. Answer D, incidentally, is caused by a lesion of the posterior column and involves loss of joint position sense, which cerebellar lesions do not.