Ear Flashcards
(36 cards)
auricle is the projecting
cartilage structure on the side of the head
the auricle direct the
air vibrations into the external auditory meatus
External Auditory Meatus is the tube or canal leading
fromt eh auricle to the tyrannic membrane
outer portion of the auricle is
inner portion of the auricle is
cartilage
bone from tympanic temporal
the Middle Ear includes
Tympanic cavity
Epitympanic cavity
the tympanic cavity is the space between then
tympanic membrane and the bony inner ear
the middle ear is connected to the nasal pharynx
by the pharyngotympanic tube
auditory tube
the middle ear is connected to the mastoid air cells by the
mastoid antrum
air pressure waves hitting the tympanic membrane are transformed into
mechanical force and amplified by ear ossicles
transformed into mechanical force at the
foot plate of the stapes in the oval window
mechanical force is transformed into pressure waves in a
liquid with in the bony labyrinth
order of the ear ossicles
malleous
incus
stapes
1st pharyngeal arch bones
malleous & incus
2nd pharyngeal arch bones
stapes
vibrations are transmitted to the inner ear by the
perilymph of the vestibule within the petrous temporal bone
muscles in the tympanic cavity
Tensor Tympani
Stapedius
Tensor Tympani attaches to the
malleous
Tensor Tympani is innervated by
V3
Tensor Tympani is derived from
1st pharyngeal arch
Stapedius attaches to
stapes
Stapedius is innervated by
Facial N.
Stapedius is derived from
2nd pharyngeal arch
sensory to the middle ear region and inner surface of ear drum
Tympanic N.
Tympanic N. is from what cranial nerve
Glossopharyngeal N.
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