The temporalis muscle is a broad, fan-shaped muscle located on the side of your head, spanning from the temporal bone of your skull down to your jawbone (mandible). It plays a crucial role in the movement of your jaw, specifically in chewing and speaking. When you engage in actions like biting or chewing, the temporalis muscle contracts, helping to lift the jaw upwards and draw it back if it’s protruding forward.
This muscle is part of a group of muscles known as the masticatory muscles, which are all involved in the chewing process. The temporalis muscle, in particular, is very powerful and efficient in creating the vertical and retracting forces needed for biting hard objects. The muscle fibers start from the temporal bone, which is the flat area you can feel if you touch the side of your head above and around the level of your ears. These fibers extend downward and converge into a tendon, which attaches to the coronoid process, a projection on the upper part of the mandible.
Due to its position and the strength it can exert, the temporalis muscle not only aids in masticatory functions but also contributes to the overall facial structure and form. Tension in the temporalis muscle can sometimes lead to discomfort or pain, often felt in the temple region, and it can be associated with stress or excessive jaw clenching.
Understanding the function and location of the temporalis muscle can help in identifying sources of facial pain and implementing appropriate interventions, such as relaxation techniques or targeted exercises, to alleviate tension in this area. This muscle, like others involved in jaw movement, can benefit from regular exercises aimed at strengthening and maintaining muscle tone for optimal function and oral health.