The temporalis muscle is a large, thin fan-shaped muscle located in the side of the skull above and in front of the ear. It is a muscle of mastication and its role is similar to the masseter, which is to elevate the mandible (lower jaw) and so close the mouth. Although the masseter is the more powerful muscle the temporalis is an important chewing muscle. It starts at the temporal bone of the skull but passes all the way down beneath zygomatic arch (cheek bone), attaching to the mandible, enabling it to assist the masseter in closing the jaw but also to retract the mandible.
Continue Reading » Temporalis Muscle: Location, Action and Trigger Points
The masseter is a jaw muscle that gets its name from the Greek work "to chew". It is the major muscle of mastication (chewing) of the human jaw and serves primarily to elevate the mandible (lower jaw) while the deep tissues help to protrude (protract) it forward. Although we rarely think of it, the mandible is the only bone of the skull that is actually moveable. The upper jaw is fixed. There is a lot of moving for the mandible to do, therefore, and the masseter is the primary worker. Located on each side of the face in the parotid1 region at the back of the jaw, these muscles are easily visible or palpable when you clench your jaw, as they contract strongly just in front of the lower ears.2
Continue Reading » Masseter Muscle: Location, Actions, and Trigger Points
Having a forward head posture puts a lot of strain on the muscles of your neck and jaw. Having a "forward head" means that your head (and often one or both shoulders, too) are in front of your body.
Where should your head be instead? Well, when you were a toddler, it was pretty much directly over your body and that's still where it should be. Due to habits, furniture, car seats, work and life, sometimes our head moves out in front of us. That causes a lot of symptoms and TMJ pain, or pain and difficulty moving your jaw, can be one of those symptoms.