Masseter muscle is partly concealed, anteriorly, by the superficial portion. Posteriorly, it is covered by the parotid gland. Along with the other three muscles of mastication (temporalis, medial pterygoid, and lateral pterygoid), the masseter is innervated by the anterior division of the mandibular division (V3) of the trigeminal nerve. The innervation pathway is: gyrus precentralis > genu capsula interna > nucleus motorius nervi trigemini > nervus trigeminus > nervus mandibularis > musculus masseter. The action of the muscle during bilateral contraction of the entire muscle is to elevate the mandible, raising the lower jaw. Elevation of the mandible occurs during the closing
What Hurts the Most Hurts the Most" was solicited to mainstream radio stations on December 11, 2007 in the United States, following its digital and physical release within the two weeks before. In Germany, the cover was released as a CD and digital single on January 4, 2008, through Zeitgeist. In contrast to the original version, Cascada's cover of "What Hurts the Most" deviates from the country sound and replaces it with Europop electronic beats and elements typical of DJ Manian and Yanou productions. However, the song opens with an acoustic guitar playing and Horler's vocals being reverbed by electropop synths. Sharon Mawer of