Flashcards in Ears Eyes, Nose and Throat WPPII Deck (22):
Outer ear consists of:
2) External Auditory Canal
Outer ear sound through tissue or air?
Middle ear consists of:
Tympanic Membrane (Ear Drum)
- Malleus (hammer)
- Incus (anvil)
- Staples (stirrup)
Middle Ear is an AIR filled space with structures.
What are the smallest bones in the body?
Inner Ear Ossicles: Malleus / Incus / Staples
What is the function of the inner ear structures?
To amplify sound vibrations
What is the function of the Auditory Tube?
To equalize pressure
1) Exists within the temporal Bone
2) Located in the Bony Labyrinth
3) Filled with fluid called Perilymph
The Inner ear
Membranous labyrinth filled with endolymph.
What structure is responsible for hearing?
cochlea, a membranous structure in the inner ear.
Special Neurons called Hair Cells.
Receptors in cochlea for hearing.
A structure in the inner ear where perilymph vibrates
At which end does the cochlea receive high pitch frequencies?
What nerve takes the sound to the brain?
Vestibular Cochlear Nerve
Vestibular System regulates what?
Balance (semi-circular canals) fluid sloshes with movement and causes hair cells to move
Give sense of equilibrium
Vertigo is an inflammation of what?
see inner ear
Conductive versus Sensorineural hearing loss?
1) outer, middle ear
2) Inner ear (Presbycusis)
The most common bacterial pathogens implicated in causing otitis media (OM)
are Streptococcus pneumoniae,
Exam findings in OM include a red bulging tympanic membrane that does not move well with pneumatic otoscopy, an opaque tympanic membrane with pus behind it, obscured middle-ear land marks, and if the tympanic membrane has ruptured, pus in the ear canal.