Unit II

Question 1

Label structures and give functions of the cochlea

Answer 1

Scala vestibuli:

Scala media (chochlear duct):

basialr vessel

scala tympani:

bony shelf (spiral lamina):

reissner’s membrane

spiral ligament

stria vascularis

tectorial membrane

outer hair cells

inner hair cells

basilar membrane

Question 2

Label Structures and functions of middle ear

Answer 2

External Auditory Meatus (ear canal)

Tympanic Membrante (eardrum)

Tympanum

Auditory/Eustachian Tube

Promontory

Fenestra Rotunda (Round Window)

Stapes

Tenestra Vestibuli (Oval Window)

Incus

Epitympanic Recess

Tegmen Tympani

Malleus

Question 3

Label structures and functions of the organ of corti

Answer 3

Inner Hair Cells

Tectorial Membrane

Tunnel of Corti

Phalanges

Outer Hair Cells

Cells of Hensen

Cells of Claudius

Outer phalangeal

Vas Spiralis (Basilar Arteries)

Rods of Corti

Habenula Perforata

Question 4

Label Structures and Functions of the Tympanic Membrane

Answer 4

Long Process of Incus

Pars Tensa

Umbo

Annulus

Cone of Light

Manubrium of Malleus

Pars Flaccida (Sharpnell’s Membrane)

Question 5

Label Structures and Functions of Ear

Answer 5

Pinna

External Auditory meatus

Tympanic Memebrane

Tympanic Sulcus

Auditory/Eustacian Tube

Nasopharynx

Middle Ear Cabity

Cochlea

Auditory Nerve

Vestibular NErve

Facial Nerve

Semicircular Canals

Ossicles