Yes, of course, if the collective identity of the group is such that it seeks to challenge the legitimacy of the correctional system itself. In Texas, for example, the pre-service and in-service âgang/STG trainingâ includes information about a group called the âSelf Defense Family (SDF)â.
Click to read more below. The trapezius is one of the major muscles of the back and is responsible for moving, rotating, and stabilizing the scapula (shoulder blade) and extending the head at the neck. It is a wide, flat, superficial muscle that covers most of the upper back and the posterior of the neck.Like most other muscles, there are two trapezius muscles â a left and a right trapezius â that are symmetrical and meet at the vertebral column.he trapezius is one of the major muscles of the back and is responsible for moving, rotating, and stabilizing the scapula (shoulder blade) and extending the head at the neck.
1 The extensor muscles are attached to the posterior (back) of the spine and enable standing and lifting objects. 2  These muscles include the large paired muscles in the lower back (erector spinae), which help hold up the spine, and gluteal muscles.xtensor, Flexor and Oblique Muscles and Back Pain. Three types of back muscles that help the spine function are extensors, flexors and obliques. 1  The extensor muscles are attached to the posterior (back) of the spine and enable standing and lifting objects.