SPLH 620 Exam 3 Questions and Answers 100% Correct(SCORED A+)

What two motor neurons does the CNS possess? - ANSWER-1. UMN (cerebrum) 2. LMN (brainstem, spinal cord) What is Dysarthria? - ANSWER-poor movement of the vocal tract What is Ataxia? - ANSWER-poorly coordinated movements What is Apraxia of speech? - ANSWER-errors in planning speech movements What are the three most important motor cortical areas? - ANSWER-1. Primary motor 2. Premotor 3. Supplementary motor What is the pathway of the Spinal Motor Pathway? - ANSWER-—Upper motor neurons 1. Cerebral cortex to spinal cord 2. Descend through the internal capsule 3. Decussates in medulla (brainstem) 4. Synapse in anterior horn of spinal cord: Corticospinal tract 5. Does not go through thalamus —Lower motor neurons 6. Cell body in anterior horn of SC 7. Synapse with muscle fibers = Motor Unit What is the internal capsule? - ANSWER-It contains collections of axons that belong to both spinal motor pathway and some ascending pathways (containing descending and ascending) What is the pathway of the bulbar motor pathway? - ANSWER-• Upper motor neurons 1. Cerebral cortex to Brainstem 2. Descend through the internal capsule 3. Synapse on Cranial Nerve