Outer ear: The part of the ear that is visible along the side of the head. The outer ear consists of the pinna, or auricle (the visible projecting portion of the ear), the external acoustic meatus (the outside opening to the ear canal), and the external ear canal, which leads to the eardrum. The outer ear concentrates air vibrations on the eardrum to make the eardrum vibrate. Search MedTerms:
The muscles of mastication control chewing and include the temporalis, masseter, digastric, and the -glossus muscles of the tongue. Finally, the neck muscles include the sternocleidomastoid and splenius muscles, which move the head.
The SCM Muscle in the Neck, it doesnât Typically Cause Neck Pain, But can cause a Slew of Neck Related Problems! To start off, the SCM muscle is actually named the sternocleidomastoid muscle. This muscle is responsible for specific neck and head motions and is split into two parts. The interesting thing is that neither part sends pain to the neck, however, it can often cause jaw pain or pain that travels up into the head. Besides headache-like pain and pain in the cheek or jaw region, it has also been linked to eye disturbances, sinus problems, inner ear problems, and even dizziness.