| Term 
 
        | Know the anatomy of the external ear |  | Definition 
 
        | Includes the fleshy auricle, or pinna, which surrounds the entrance to the external acoustic meatus, or auditory canal |  | 
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        | Term 
 
        | 2.	Know how cerumen and cartilage part of external acoustic canal help protect the ear. |  | Definition 
 
        | Ceruminous glands along the external acoustic meatus secrete a waxy material (cerumen) that helps prevent the entry of foreign objects and insects, and the auricle, supported by elastic cartilage, protects the opening of the ear canal |  | 
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        | Term 
 
        | Know the anatomy of the middle ear |  | Definition 
 
        | Tympanic cavity is an air-filled chamber separated from the external acoustic meatus by the tympanic membrane |  | 
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        | Term 
 
        | 4.	Explain how the tympanic reflex protect the ear. Which muscles are involved? |  | Definition 
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