Ear Flashcards
Elastic cartilage coveral by skin and collect sound wave
Ear pinna ( auricle )
Forme of (____ part lateral _ /3) and ( ___ part medial __ /3 )
External acoustic (auditory)
Cartilginous 1/3
Bony 2/3
Fibroas membrane between the external and middle ear
Ear drum ( tympanic membrane)
Middle ear contains of three bone (earossicles)
1- ____
2- ____
3- ____
I-malleus
2- incus
3- stapes
auditory (austchian) tube connect———
Connect middle ear with the naspharynx
Function of (ear ossicles )
Transmit the sound woves from tympanic membrane to the internal ear
responsible for Equalize the air pressure on both side tympanic membrane
Eustachain tube
_ _ _ _ Transmission of infection from the pharynx to middle ear
Eustachian
Give resone infection transmated in children and infants easer from pharynx to the middle ear ?
The eustachian tube is horizontal and shorter than adult