masseteriska

Masseteriska refers to the masseter muscle, one of the masticatory muscles responsible for chewing. It is a thick, rectangular muscle located in the side of the face. The masseter originates from the zygomatic arch, the bony ridge of the cheekbone, and inserts onto the angle and ramus of the mandible, the lower jawbone. Its primary action is to elevate the mandible, closing the jaw and enabling forceful biting and grinding of food.

The masseter muscle is innervated by the mandibular division of the trigeminal nerve, cranial nerve V. It plays a crucial role in the biomechanics of mastication, working in conjunction with other muscles like the temporalis and pterygoids. The strength and development of the masseter can vary significantly between individuals, influenced by factors such as diet and habits like bruxism (teeth grinding). Hypertrophy, or enlargement, of the masseter can lead to a more squared facial appearance and is sometimes a target for cosmetic procedures. Conversely, weakness or dysfunction of the masseter can impair chewing ability and potentially contribute to temporomandibular joint (TMJ) disorders.