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
General of the Air Force the U.S. Army's rank of General of the Army and the U.S. Navy's rank of Fleet Admiral. In foreign militaries, the United States' rank of General of the Air Force has been equated to the rank Marshal of the air force. The only United States Armed Forces rank senior to General of the Air Force is General of the Armies; Admiral of the Navy is also technically senior, but an official comparison between General of the Air Force and Admiral of the Navy has never been made by the United States military. The General of the Armies rank has been