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.
Extensor, 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.oft tissues around the spine also play a key role in lower back pain. There is a large and complex group of muscles that work together to support the spine, help hold the body upright and allow the trunk of the body to move, twist and bend in many directions. 1  See Lumbar Spine Anatomy and Pain.