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Ears
Senses
| Question | Answer |
|---|---|
| Auditory | Pertains to the ear |
| Acoustic | Pertains to hearing |
| Pinna | External portion of the ear aka auricle |
| External Auditory Canal | Tube that transmits sound to the tympatic membrane |
| Cerumin | Earwax |
| Eardrum | Tympatic Membrane |
| Auditory Ossicles | 3 bones of middle ear: malleus, incus, stapes |
| Eustachian Tube | Duct that leads from middle ear to nasopharynx |
| Oval Window | Membrane that separates middle and inner ear |
| Tympanic Bulla | Osseous chamber at the base of the skull |
| Inner Ear | Contains sensory receptors for hearing and balance |
| Perilymph | Water-like fluid in the bony labyrinth |
| Endolymph | Thicker fluid in the sac of the membranous labyrinth |
| Vestibule | First part of bony labyrinth located adjacent to the oval window between semicircular canals and cochlea |
| Semicircular Canals | Vestibular, Tympanic, Cochlear |
| Cochlea | spiral-shaped passage from oval window to inner ear |
| Cochlear Duct | Tube in the cochlea filled with endolymph which vibrates when sound waves strike it |
| Organ of Corti | Spiral organ of hearing located in the cochlea |
| 3 stages of hearing | Air conduction, Bone conduction, Sensorineural Conduction |
| Air conduction | Sound waves enter pinna, travel through external auditory canal, strike tympatic membrane |
| Bone conduction | Tympatic membrane vibrates, Ossicles begin to move, ossicles conduct sound waves through the middle ear |
| Sensorineural conduction | Sound vibrations reach the inner ear via round window, inner ear structures respond to sound waves that displace fluid in the inner ear |
| Equilibrium | State of balance |
| Static equilibrium | maintaining the position of the head relative to gravity |
| Dynamic equilibrium | maintaining balance in response to rotational or angular movement |
| Aural hematoma | Collection of blood on the outer ear |
| Deafness | Complete or partial hearing loss |
| Myringitis | Inflammation of the eardrum |
| Otalgia | Ear pain |
| Otitis | Inflammation of the ear |
| Otomycosis | Fungal infection of the ear |
| Otopathy | Disease of the ear |
| Otopyorrhea | Pus discharge from the ear |
| Panotitis | inflammation of all ear parts |
| Vertigo | Sense of dizziness |
| Round window | Membrane that receives sound waves through fluid after passing through the cochlea |
Created by:
Libelle
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