There are over 700 muscles in the human body and they are identified in large groups. The muscles groups in the head and neck are the suboccipital, prevertebral, anterolateral neck, superficial neck, anterior neck, epicranial, muscles of facial expression, muscles of mastication, extraocular and laryngeal. Each of the muscles have a beginning point, the origin and an ending, the insertion. For example, in the suboccipital group, there is the obliquus capitis inferior that originates at the …showed first 75 words of 349 total…

…showed last 75 words of 349 total…course in a straight line from origin to insertion in every position of the joint joining the middle surface of origin with the middle of the insertion surface will the direction of the pull. Some muscle fibers are almost parallel to the direction of the tendon and all the strength of the muscle contraction goes in the direction of the tendon. Accurate knowledge can be determined by knowing the origins and insertions of a muscle.