Electromyography Essay

Mastication is an unconscious lateral and adduction motion that is organised by the motor program, which is then controlled by the central nervous system. (1) Nonetheless, the motions of swallowing and chewing can be adjusted, as the type of food that is being consumed (e.g. brittle, tough) solely contributes to it. (2) Furthermore, mastication constitutes the aid in the mechanical breakdown of food into minor particles, then movements in teeth, digestive enzymes and four bilateral muscles accompany the bolus. These muscles comprise of the Temporalis, Lateral Pterygoid, Medial Pterygoid and the Masseter. Thereby, they conjoin into a single composed division of a nerve, which elevates, retracts, and protracts the lower jaw to or fro the neutral position. Correspondingly, they assist in the side-to-side movement within the jaw. Though, the Masseter muscle is proven to be the utmost significance in chewing as it elevates the mandible (the bone which forms the jaw) and is situated in the superficial region. In relative to this, these muscles encompass cells that alter voltages due to the action potential (EMG) promulgating from within neurons, to a muscle cell. …show more content…
EMG is an examination that measures the electrical activity and muscle reaction to the stimulation of a nerve within the muscle. (3) Additionally, it is utilised to identify neuromuscular abnormalities. EMG initiates the measurements of muscle electrical activity at baseline rest; albeit, once the muscle contracts (e.g. clenching of the jaw) the action potential is generated to statistically stipulate information on the muscles’ ability to respond alongside nerves that are stimulated. Therefore, when the muscles are contracted repetitively and more forcibly, the more action potential is produced, as the muscle fibers that are activated will