special senses: Eyes and Ears

Optic Nerve

Inferior Rectus

CN III, depression of eye

Inferior Oblique

CN III, elevation and lateral rotation of eye

Lateral Rectus

Lacrimal Gland

Pupil

Sclera

Iris

Medial Rectus

CN III, medial movement of eye

Superior Oblique

CN IV, depression and lateral rotation of eye

Inferior Oblique

Inferior Rectus

Superior Rectus

CN III, elevation of eye

Lateral Rectus

CN IV, lateral movement of eye

Conjunctiva is the membrane covering the sclera (and inside eyelids).

What is contained in the fibrous tunic?

what is contained in the vascular tunic?

what is contained in the nervous tunic?

1) sclera, cornea

2) iris, choroid, ciliary body

3) retina → fovea centralis, optic disk, optic nerve

Suspensory Ligaments

Sclera

Ciliary Body

chamber?

Posterior Chamber (iris→lens)

filled w aqueous humor

Iris

Posterior Compartment/Vitreous Humorous

Fovea Centralis

Optic Nerve

Retina

Choroid

chamber?

Anterior Chamber (cornea→iris)

filled w/ Aqueous Humor

Cornea

Pupil

Lens

Retina

Optic Nerve

Optic Disk

Cornea

Iris

Posterior/Vitreous Compartment filled w/ Vitreous Humor

What auditory ossicle?

Malleus (hammer)

What auditory ossicle?

Incus (anvil)

What auditory ossicle?

Stapes (stirrups)

Cochlea Inside

Cochlear Duct

(Scala medius)

Red?

Organ of Corti (aka spiral organ)

Scala Vestibuli

Scala Tympani

Basilar membrane

Orange?

Tectorial membrane

Liquid inside 1 and 2 ?

1) Perilymph (inside scala vestibuli and tympani)

2) endolymph (inside cochlear duct)

Round Window

Vestibule

Semicircular Canals

Oval Window

Cochlea

External Auditory Canal

Auditory Tube

Tympanic Membrane

Cochlea

Semicircular Canals

Stapes

Incus

Malleus

Auricle/Pinna (bendy part of external ear, funnels sound)

Ampulla

Scala Tympani

Vestibulocochlear Nerve

Vestibule

Ishihara color plates

colorblindness

Green’s Test

measures astigmatism

“Green needs a test for astigmatism”

Snellen Eye Chart

measures visual acuity

“Snellen uses an eye chart for visual acuity”

Rinne test

conduction deafness

“rinne gets a test for conduction deafness”

Weber test

sensorineural deafness

“weber needs a test for sensorineural deafness”

Romberg test

equilibrium

“Romberg tests your equilibrium”