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Questions and Answers
What is the main function of the corticospinal tracts?
What is the main function of the corticospinal tracts?
- Receiving sensory and motor input
- Coordinating motor activity and maintaining equilibrium
- Maintaining muscle tone and controlling body movements
- Mediating voluntary movement and integrating skilled movements (correct)
Where do most of the fibers of the corticospinal tracts cross to the opposite side?
Where do most of the fibers of the corticospinal tracts cross to the opposite side?
- Brainstem
- Cerebral cortex
- Spinal cord
- Lower medulla (correct)
Which system helps to control body movements, especially gross automatic movements such as walking?
Which system helps to control body movements, especially gross automatic movements such as walking?
- Cerebellar system
- Motor cortex
- Corticospinal tract
- Basal ganglia system (correct)
What is the main function of the cerebellar system?
What is the main function of the cerebellar system?
Which anatomical structure do the motor fibers of the corticospinal tracts form in the lower medulla?
Which anatomical structure do the motor fibers of the corticospinal tracts form in the lower medulla?
What do the corticospinal tracts carry impulses that inhibit?
What do the corticospinal tracts carry impulses that inhibit?
What happens when the corticospinal tract is damaged or destroyed?
What happens when the corticospinal tract is damaged or destroyed?
Where does motor impairment develop when upper motor neuron systems are damaged above their crossover in the medulla?
Where does motor impairment develop when upper motor neuron systems are damaged above their crossover in the medulla?
What occurs when there's damage to the lower motor neuron systems?
What occurs when there's damage to the lower motor neuron systems?
What changes occur in muscle tone as a result of damage to the basal ganglia system?
What changes occur in muscle tone as a result of damage to the basal ganglia system?
What deficits can result from cerebellar damage?
What deficits can result from cerebellar damage?
What happens to skilled, complicated, or delicate movements when the corticospinal tract is damaged?
What happens to skilled, complicated, or delicate movements when the corticospinal tract is damaged?
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