耳的解剖生理 PPT课件.ppt

Otology
Applied Anatomy & Physiology
The ear consists of three parts: external、middle、internal
外耳
中耳
内耳
temporal bone
Located at the two sides of the cranial bone
Part of the lateral wall and bottom of cranial bone
It consists a part of :middle cranial fossa,
Posterior cranial fossa.
Anatomy of temporal bone
Consists of five parts: squamous portion 、tympanic portion 、mastoid portion 、petrous portion 、styloid process
ear
→contains two parts: auricle and the external auditory meatus
auricle:
Helix
Triangular fossa
Antihelix
Concha
Tragus
Antitragus
Lobule
Features of the skin:
.painful
.exudation
.disfiguration
.easy to be froozing
Aural pseudocyst
Congenital preauricular fistula
external ear
external auditory meatus
Long ~
Cartilagious portion(outer 1/3)
Bony portion(inner2/3)
“S”
pulling the pinna upwards、backwards and outwards
ear
Contains four parts:
tympanic cavity
the pharyngotympanic tube
the tympanic antrum
the mastoid process