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NEURO ANATOMY AND PHYSIOLOGY OF MASTICATORY SYSTEM

  • A highly refined neurologic control system regulates and coordinates the activities of the entire masticatory system .
  • It consist of primarily nerves and muscles hence the term neuromuscular system.
  • Muscles:
  • Motor unit: It is the basic component of neuromuscular system –consist of number of muscles fibers that are innervated by6 one motor neuron .
  • Each neuron  joins with the muscle fiber at the motor end plate

 

  • To understand the effect of these muscles one must observe the basic skeletal relationships of head and neck.
  • The skull is supported in position by cervical spine in fact cervical spine alone cannot support the head so far this muscles are needed to balance it.
  • If the head is to be maintained in an upright position so one can see forward’,the muscles that attach the posterior aspect of skull to the cervical spine and shoulder region must contract.

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