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.
The wall of the pharynx is composed mainly of two layers of skeletal muscles. The external, circular layer comprises three constrictors (fig. 53-7 and table 53-1). The internal, chiefly longitudinal layer consists of two levators: the stylopharyngeus and the palatopharyngeus.