Messator Muscle

What would happen if people just couldn’t shut their mouth when they are supposed to?????

the human body has a specific group of muscles called masticatory muscles.  

                      

made for this function chewing .

Many muscles of the head and neck participate in the chewing process, but in the group of main masticatory muscles, only the following are listed:

                 1: Masseter muscle

                 2: Temporal muscle

                 3: Lateral pterygoid muscle

                 4: Medial pterygoid muscle 

The strongest muscle based on its weight is the masseter.  The main function of the masseter muscle is to help a person bite down or chew. Specifically, this muscle helps to pull the lower jaw upward.

            It is caused by tension, fatigue, or spasm in the masticatory muscles.  ). ... The muscle pain from trigger points in the affected muscle causing the disorder usually is the result of clenching or grinding of the teeth.