Splh 620 Exam 3 Questions And Answers 100% Correct

What happens when there is bilateral UMN damage? Unilateral UMN damage? Bilateral LMN damage? Unilateral LMN damage? {Ans: Bilateral UMN damage: spasticity on both sides; Unilateral UMN damage: no effect if corticobulbar tract is bilateral (most CN); spasticity on contralateral side if corticobulbar tract is contralateral (the two exceptions...). Bilateral LMN damage: flaccidity on both sides; Unilateral LMN damage: flaccidity on ipsilateral side.}What is involved in the pyramidal system/tract? {Ans: = direct activation pathway, direct motor system • Controls voluntary movements (finely controlled, skilled, discrete, rapid) • Has only one axonal synapse • Innervates LMNs (IPSILATERAL??)}What are the motor branchial cranial nerves ? {Ans: V, VII, IX, X, XI}What are the characteristics of Broca's Aphasia? {Ans: 1. Slow, laborious speech 2. Non-fluent speech 3. Agrammatism (Impaired ability to use correct morphemes, sentence structures, grammatical information) 4. Extreme difficulty with speech articulation (+ comprehension, Repetition -, Naming -)}Increasing X firing frequency recruits motor units in order of their strength. • Muscle contraction strength is therefore controlled by Y. {Ans: X = UMN Y = the number and rate of neurons firing}Spinal injury examples study!! {Ans: STUDY}What is ataxic dysarthria? {Ans: 1. Damage to the