Health17 Feb 2010 01:04 pm
In bilateral contraction the muscles hold the head in a vertical position (head-holder);that is why the muscle itself and the place of its attachement (the mastoid process)are most developed in man,who walks erect.bilateral contraction may also bend the cervical spine forward and simultaneously raise the face.when the head is fixed, the muscle can raise the chest in respiration (an accessory muscle of inspiration).THE MIDDLE MUSCLES,OR MUSCLES OF THE HYOID BONE:Muscles Located above the Hyoid bone Derivatives of the visceral Arches:These muscles of suprahyoid localization lie between the mandible and the hyoid bone Medical Coding Services will help in the proper collections.
