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 sternocleidomastoid muscle, however, creates a tremendous amount of trouble for people in the form of headaches, facial pain, jaw pain and tension, and even stranger symptoms, like dizziness, brain fog, blurry vision, and even hearing loss!This two parted muscle begins at the skull behind the ear.he SCM can cause a variety of symptoms including head and face pain, balance problems, visual disturbances, ear and sinus symptoms, and more body wide symptoms.