Muscle function: 1. contraction for locomotion and skeletal movement. 2. contraction for propulsion. 3. contraction for pressure regulation. Muscle classification: muscle tissue may be classified according to a morphological classification or a functional classification.ardiac muscle cells are not as long as skeletal muscles cells and often are branched cells. Cardiac muscle cells may be mononucleated or binucleated. In either case the nuclei are located centrally in the cell. Cardiac muscle is also striated.
1 A neurologist (if nerve problems are causing your pain) 2  A psychologist (if your pain is caused or worsened by stress or other psychological issues) 3  An orthopedic surgeon.  A rheumatologist (if your back pain is caused by arthritis or other joint problem)
Today, there are over 8,000 physicians practicing physical medicine and rehabilitation. 1 Many PM&R physicians who treat back pain are part of a Spine Center or Spine Hospital, treating patients within a practice that includes other specialists, such as physical therapists, spine surgeons, rehabilitation specialists, and more.