Special Senses Ear Flashcards
the ear is what part of the temporal bone
the petrosal part
tensor tympani is suppleid by what
V3
stapedius is supplied by
CN VII
what are the thigns that the typanic membrane coems from
ectoderm, mesoderm, and endoderm
autitis externa how can you tell
pull on ear and baby will scream
what 3 things are in the middle ear
- ossicles
- muscles ( 2)
- oval window and round window
the oval window is near what? the round window is near what
stapes
cohclea
what are the two labirinths in the internal ear
bony and membranous
what is the series of spaces inside the petrous part of the temporal bone
bony labyrinth
extracellular fluid
perilymph
intracellular fluid?
endolymph
wat 3 things make up the bony lab
vetibule
semicrcular canal
cochlea
how many times does the cochlea wind around the modiolous
2 and 1/2 turms
the scala vestibuli and tympani are part of the
bony lab
what does sprial organ sit on
basilar membrane