Molecular Any injury sustained from blunt force, which may be related to MVAs, or mishaps, falls or jumps, blows or crush injuries from animals, blunt objects or unarmed assailants. Cf Penetrating trauma. A wound in which the surface of the skin remains intact, caused by impact or collision with a blunt object, e.g., an automobile fender.
Mastoiditis occurs when ear infections cause infection in the mastoid bone. The mastoid bone can be found directly behind the ear. Mastoiditis causes the area behind the ear to swell and protrude out of the skin. The bump behind ear is accompanied with fever, ear pain, hearing loss and ear redness.
The Outer Ear: Catch the Wave. The outer ear is called the pinna or auricle (say: OR-ih-kul). This is the part of the ear that people can see. It's what people pierce to wear earrings and what your friend whispers into when it's time for a secret. The main job of the outer ear is to collect sounds, whether they're your friend's whispers or a barking dog.