A pilot is someone who is in the aviation industry, and who is able to operate aircraft in order to transport passengers or goods from one location to another. They are employed by commercial airlines, corporations, or governments.
Contraction of these deep core muscles provides segmental stabilisation of the spine. The outer unit consists of many muscles such as the Obliquus externus, Obliquus internus, Erector spinae, Latissimus dorsi, Gluteus muscles, the Quadratus lumborum, adductors and hamstrings.
Skeletal muscles are composed of striated subunits called sarcomeres, which are composed of the myofilaments actin and myosin. Illustrate the structure of a skeletal muscle fiber. 1  Muscles are composed of long bundles of myocytes or muscle fibers.  Myocytes contain thousands of myofibrils.