masseterica

Masseterica is a Latin-derived term used in anatomy to denote structures related to the masseter muscle, one of the muscles of mastication located at the jaw. The form masseterica functions as an adjective and appears in Latinized names for specific structures associated with the masseter, such as arteria masseterica (masseteric artery) and nervus massetericus (nerve to the masseter). These terms identify the vascular and neural components that supply and control the muscle.

In anatomy, the masseter muscle originates from the inferior border and medial surface of the zygomatic arch and inserts on the lateral surface of the mandible near its angle. Its principal action is the elevation of the mandible, closing the jaw. The masseteric artery, typically a branch of the maxillary artery, supplies the masseter and often runs with branches of the nerve to the masseter through small foramina or notches to reach the muscle. The masseteric nerve is usually a branch of the anterior division of the mandibular nerve (V3) and provides motor innervation to the masseter.

Clinical relevance lies in procedures involving the infratemporal fossa, zygomatic arch, or the ramus of the mandible, where awareness of masseteric vascular and neural elements helps prevent injury during surgery or dental interventions. The term masseterica thus serves as a linguistic and taxonomic tool rather than a distinct anatomical structure.

See also: masseter muscle, trigeminal nerve, maxillary artery.