SETAC Mission Statement Our mission at South East Texas Amateur Club is to promote and advance Amateur Radio, in our communities, state, nationally, and internationally. We will provide education and training in basic electronics, radio theory, operating safety, and accepted operating practice to interested individuals.
Injury at this level of the spinal cord might injure the phrenic nerve. This nerve supplies the diaphragm, which permits inspiration and expiration. If this nerve is damaged, the impulses no longer reach the diaphragm and the diaphragm stops contracting.
The diaphragm is a double-domed sheet of skeletal muscle, located at the inferior-most aspect of the rib cage. It serves two main functions: Separates the thoracic cavity from the abdominal cavity (the word diaphragm is derived from the Greek âdiÃ¡phragmaâ, meaning partition). Undergoes contraction and relaxation, altering the volume of the thoracic cavity and the lungs, producing inspiration and expiration.