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)
For more complicated cases of lupus, a rheumatologist is usually the primary doctor. Other specialists are consulted as needed. For mental health problems such as depression, anxiety, psychosis, or other behavioral changes, see your family medical doctor or internist, or a psychiatrist. For the treatment of organ problems, a doctor who specializes in diseases of that particular organ system may work together with a rheumatologist or immunologist.