External and Middle Ear Flashcards
1
Q
Tensor tympani origin
A
- cartilaginous pharyngotympanic tube
- greater wing of sphenoid
- it’s own bony canal
2
Q
Tensor tympani insertion
A
Upper part of handle of malleus
3
Q
Tensor tympani innervation
A
Branch of mandibular n. (V3)
4
Q
Tensor tympani action
A
Pulls handle of malleus medially tensing tympanic membrane
5
Q
Stapedius origin
A
Inside pyramidal eminence
6
Q
Stapedius Insertion
A
Neck of stapes
7
Q
Stapedius Innervation
A
Branch of facial n. (VII)
8
Q
Stapedius Action
A
Pulls stapes posteriorly, preventing excessive oscillation
