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
Marshal of the air force Marshal of the air force Marshal of the air force is the English term for the most senior rank in a number of air forces. The ranks described by this term can properly be considered marshal ranks. No air force in an English-speaking country formally uses the exact title "marshal of the air force", although it is sometimes used as a shortened form of the full title. In several Commonwealth air forces and many Middle Eastern air forces the most senior rank is named "marshal of the", followed by the name of the air force (e.g. Marshal of the Royal