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
The Human Condition (Magritte) The Human Condition (Magritte) The Human Condition (La condition humaine) generally refers to two similar oil on canvas paintings by the Belgian surrealist René Magritte. One was completed in 1933 and is in the collection of the National Gallery of Art in Washington DC. The other was completed in 1935 and is part of the Simon Spierer Collection in Geneva, Switzerland. A number of drawings of the same name exist as well, including one at the Cleveland Museum of Art. One of Magritte's most common artistic devices was the use of objects to hide what lies behind them. For example,