Learning Objectives

• What are the effects of upper and lower motor nerve lesions?
• Describe a reflex arc
• Explain stretch reflex and inverse stretch reflex
• What are the descending tracts involved in voluntary motor control?
• Name the brain regions involved in voluntary motor movement
• Describe the functions of primary motor cortex
• Describe the functions of cerebellum in motor processing
• Describe the various components of basal ganglia
• Explain the role of the basal ganglia in motor function

Motor System

• what are the 2 types of motor neurons?
• what is a motor unit?
• what are the steps of motor processing?
• what 4 highly interactive subsystems provide motor control?
• movements can be controlled [3 ways]?

Upper & Lower Motor Neurons

• origin and termination point of UMNs vs LMNs?
• what is the function of UMNs?