Middle Ear Anatomy

What is the muscle attached to the stapes?

• tensor tympani

• humorous

• sternocleidomastoid

• stapedius

The impedance matching function of the middle ear is primarily due to the areal ratio of what two structures?

• tympanic membrane

• round window

• oval window

• tensor tympani

Where does the ossicular chain route sound to?

• round window

• oval window

• tympanic membrane

• a speaker

Energy is changed from ____ to ____ at the tympanic membrane.

• hydraulic to acousitc

• acoustic to hydraulic

• mechanical to hydraulic

• acoustic to mechanical

The main purpose of the middle ear is....

What is the air filled space at the top of the middle ear cavity?

• epitympanic recess

• tensor tympani

• promontory

• the roof

What is the muscle attached to the malleus?

• stapedius

• humorous

• tensor tympani

• sternocleidomastoid

Which cranial nerve innervates the tensor tympani?

• CNVIII

• CNV

• CVII

• CNX

Which cranial nerve innervates the stapedius muscle?

• CNVIII

• CNV

• CNVII

• CNX

What are the functions of the eustachian tube?

• drains fluid

• airs out middle ear

• equalizes pressure

• all of the above