11. The motor units were given road numbers 505 through 507. 12. An alpha motor neuron and the muscle fibers it innervates is a motor unit . 13. Spatial recruitment is the activation of more motor units to produce a greater force. 14. Each fan had its own self-contained motor unit , with no need for belt drive. 15. Damage to motor units can be expected at ranges between 450 and 780 mV. 16. Electrically, the nerve shows rapid and complete degeneration, with loss of voluntary motor units . 17. Therefore, MU cars can be motor units or trailer units. 18. Set number 115 introduced 4.5 volt B�hler motor unit . 19. I happened to stumble across some student edits at Motor unit that require some cleanup. 20. Motor unit potentials fire while the patient is at rest, particularly in the stiff muscles.