Gas expands, volume increases (surface area increases) as P = F/A. Clearly force also needs to increase to keep P constant. A greater force means a greater rate of change of momentum, so the molecules must have a greater mean kinetic energy. Therefore the gas must be at a higher temperature meaning heat energy (Q) must be supplied.
When the shoulder is shrugged, this muscle is at work. When a heavy bag is carried, the levator scapulae muscle helps the body bear the burden. This muscle begins at the vertebrae just below the skull, called the cervical vertebrae. It is attached to the transverse processes of the cervical vertebrae.
11 Best Exercises for Scapular Stabilization. The scapula, the largest bone of your shoulder girdle, connects the humerus to the clavicle. The serratus anterior and rhomboid muscles hold this bone flat against the rib cage. Damage to these muscles can lift your scapula, a condition referred to as âwingingâ. Winging can occur on one or both of your shoulders where the winged scapula protrudes outwards. Proper Scapular stabilization exercises can help strengthen your serratus anterior and rhomboid muscles, which in turn will protect your scapula from long term damage. Scapular Stabilization Exercises