Which of the following is the result of the destruction of the dorsal root of the spinal cord? O Spastic paralysis O Poliomyelitis Paresthesias O Flaccid paralysis
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- A lower motor lesion involving CNVII will result in which of the following: Ipsilateral lower facial paralysis Contralateral lower facial paralysis Contralateral upper and lower facial paralysis Ipsilateral upper and lower facial paralysisA lower motor lesion involving CNVII will result in: Ipsilateral lower facial paralysis Contralateral lower facial paralysis Contralateral upper and lower facial paralysis Ipsilateral upper and lower facial paralysisSelective destruction of a motoneurons in the spinal cord will have which of the following effects on the affected muscles?A) Flaccid paralysisB) HypertrophyC) Lead-pipe rigidityD) RigidityE) Spastic paralysis
- The most dramatic effects of an UMN lesion occurs with lesions at the level of :-a- the 1ry motor areab- internal capsulec- medullary pyramidsd- lateral column of spinal white materParkinson’s disease results from damage of :-a- caudate nucleusb- subthalamic nucleusc- globus pallidusd- substantia nigraA spinal reflex requires the participation of each of the following except:a. cerebral cortexb. sensory neuronc. interneurond. motor neuron
- A 50-year-old woman comes to the physician because of a 1-month history of shaking of her right arm when writing or lifting a cup. Physical examination showscoarse action tremor of the right upper extremity that worsens as she approaches the target. This patient most likely has damage to which of the following components of the brain?A) CerebellumB) Internal capsuleC) Substantia nigraD) Subthalamic nucleusE) Supplementary motor cortexThe central terminals of afferent neurons mediating spinal reflexes are distributed within the spinal cord, so that :-a- all of them terminate in the same spinal segment of their entry to the cordb- all of them terminate on interneuronsc- all of them subserve spinal reflexesd- they provide pathways for divergence of the incoming sensory impulsesIn adults, the spinal cord is not the same length as the vertebral canal, and most of the lumbar part of the spinal cord is within A. the coccyx. B. the sacrum. C. the cervical vertebrae. D. the thoracic vertebrae. E. the cauda equina.
- Demyelination of a ventral root would be most likely to produce which of the following? hypo-reflexia hyper-reflexia 2. A spinal hemi-section (as is observed in Brown-Sequard syndrome) would be most likely to produce which of the following? hypertonia hypotonia below the lesionWhat term describes the inability to lift the arm abovethe level of the shoulder?a. paralysisb. paresisc. fasciculationd. fibrillationWhat condition causes a stroke?a. inflammation of meningesb. lumbar puncturec. infection of cerebral spinal fluidd. disruption of blood to the brain