For purposes of the hearing conservation program, employee noise exposures shall be computed in accordance with appendix A and Table G-16a, and without regard to any attenuation provided by the use of personal protective equipmentâ (1910.95(c)(1)).
The platysma is a superficial muscle that overlaps the sternocleidomastoid. It is a broad sheet arising from the fascia covering the upper parts of the pectoralis major and deltoid; its fibers cross the clavicle, and proceed obliquely upward and medially along the side of the neck.
An ecchymosis is a bruise. A hematoma is a blood clot. A Hematoma is a collection of clotted blood outside a blood vessel. A Ecchymosis(commonly called a bruise) is blood leaked out from a blood vessel under the skin. Hematomas are swellings and has more of a three dimensional character to it, while ecchymoses are flat. As well, hematomas may occur in any organ and not just under the skin like ecchymoses.