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Audiology Exam 2
| Term | Definition |
|---|---|
| Coronal | Front and back |
| Sagittal | Left and right |
| Axial/transverse | Top and bottom |
| Anterior | Toward the front |
| Posterior | Toward the back |
| Lateral | Away from the midline |
| Medial | Toward the midline |
| Proximal | Toward the reference point (extremity) |
| Distal | Away from the reference point (extremity) |
| Inferior | Lower/below |
| Superior | Upper/above |
| Where is the auditory system housed? | Temporal bone |
| What is the auditory system made up of? | 1. Peripheral auditory system - Outer, middle, inner ear 2. Central auditory system - Auditory nerve, cortex, brainstem |
| What are the functions of the outer ear? | 1. Localization 2. Amplification 3. Funneling of sound 4. Protection |
| What is sound localization of the outer ear? | Pinna captures airborne sound waves and guides them into the external auditory canal, which then directs sound waves to the tympanic membrane. Judges elevation and front-back position. |
| How many bends does the ear canal have? | 3 |
| What makes up the external auditory meatus (EAM)? | 1. Pinna 2. Tympanic membrane 3. Bony external auditory canal 4. Cartilaginous external auditory canal |
| What is the technical term for the eardrum? | Tympanic membrane |
| How many layers does the tympanic membrane have and describe them? | 3: Outer layer = Skin, flexible Middle layer = Fibrous tissue, rigid/stiff Inner layer = Mucosal layer, skin, wet/mucosy |