CNS Sequence

Eye and Ear Lab

March 18, 2009

Eyelids: Netter pl. 76

UCSF #173; human eyelid

skin

palpebral conjunctiva

apocrine glands of Moll

tarsal glands

orbicularis oculi orbicularis oculi m.m.

tarsal tarsal plateplate

accessory lacrimal glands

levator palpebrae m. (and tendon)

superior tarsal muscle

eyelashes w/ sebaceous glands (of

Zeis)

levator palpebrae

levator palpebrae

muscle

muscle

superior tarsal

superior tarsal musclemuscle

obicularis oculi obicularis oculi musclemuscle

tarsal tarsal plateplate

tarsal tarsal

glandsglands

Three Tunics of the Eye

Cornea

Iris

Anterior chamber

Posterior chamber

Ciliary body and processes

Hyaloid canal

Optic nerve

Central retinal artery & vein

Retina

Choroid

Sclera

Vitreous chamber

Arteries and Veins of Orbit

Ciliary arteries

Central retinal artery and vein

EYE-2

Lens

Lens capsule

Lens epithelium

Lens fibers

Lens fiber formation at the equator region

equator

Lens and lens fibers

Corneal Corneal EpitheliumEpithelium

DescemeDescemet’s t’s

MembranMembranee

Corneal Corneal StromaStroma

Bowman’Bowman’s s

MembranMembranee

Corneal Corneal EndotheliEndotheli

umum

(Slide EYE-2_20X)

Cornea

(Type I (Type I collagen)collagen)

Cornea

CFCF

lamellae

A: Anterior chamber P: Posterior chamber

A

P

Anterior chamberAnterior chamber

IrisIris

Posterior chamberPosterior chamber

Trabecular meshworkTrabecular meshwork

Canal of SchlemmCanal of Schlemm

CorneaCornea

A: Trabecular meshwork B: Canal of Schlemm

A

B

Ciliary body and ciliary processes

Ciliary processes

Ciliary body

Pigmented and non-pigmented ciliary epithelial cells

Sphincter (constrictor)pupillae

[smooth muscle]

Dilator pupillae [myoepithelial

cells]

EYE-2 Ora serrata

Sclera

ChoroidBruch’s membrane

Choriocapillary layer

RetinaInner limiting membraneOptic nerve fibers

Ganglion cell layerInner plexiform layer

Inner nuclear layer

Outer plexiform layer

Outer nuclear layer

Outer limiting membraneRods and conesRetinal pigment epithelium

EYE-1 Fovea centralis

Ora serrata Fovea centralis

Optic papilla (disc)

Fovea centralis Optic papilla (disk)

Outer, middle and inner ear

Semicircular ducts

Endolymphatic sac and duct

Cochlear duct

Saccule

Utricle

Ear-3

Saccule ?

Cochlear ductSaccule

EAR-2

Cochlea

Utricle

?? Ampulla of a semicircular duct

Saccule

Ampulla of a semicircular duct

Utricle (or saccule)

Ampullae

Crista ampullaris Macula

(with cupula) (with otolithic membrane)

in Semicircular canal in Saccule and utricle

EAR-2 Macula Crista ampullaris

Otolithic membrane with otoconia (otoliths)

Cupula

Cochlea

Base

Helicotrema

Cochlear Nerve

Modiolus

Spiral ganglion

# Ear-4

Cochlear nerve

Organ of Corti in Scala Media

Scala vestibuli

Scala tympaniScala media

?

?

Stria vascularis

Scala media (cochlear duct)

Basilar membrane

Vestibular membrane

Tectorial m.

Scala vestibuli

Scala tympani

Organ of Corti

Outer hair cells

Inner hair cell

Inner and outer pillar cells

O. phalangeal cells

I. phalangeal cell

Inner tunnel

Perilymph and endolymph filled spaces in cochleaBlue: perilymph Yellow: endolymph

Helicotrema

Osseous spiral lamina

Cochlear duct

Low pitch sound(longer basilar

membrane)

High pitch sound (shorter basilar

membrane)

?

? EAR-3