bio 153l eyes

rectus

straight

oblique

slanting

lateral rectus

medial rectus

superior rectus

inferior rectus

superior oblique

inferior oblique

moves eye laterally

action of lateral rectus

VI (abducens)

controlling cranial nerve of lateral rectus

moves eye medially

action of medial rectus

III (oculomotor)

controlling cranial nerve of medial rectus

elevates eye and turns it medially

action of superior rectus

III (oculomotor)

controlling cranial nerve of superior rectus

depresses eye and turns it medially

action of inferior rectus

III (oculomotor)

controlling cranial nerve of inferior rectus

elevates eye and turns it laterally

action of inferior oblique

III (oculomotor)

controlling cranial nerve of inferior oblique

depresses eye and turns it laterally

action of superior oblique

IV (trochlear)

controlling cranial nerve of superior obliqe

ciliary body

cornea

iris

pupil

lens

aqueous humor

i think?

sclera

choroid

retina

optic disc

optic nerve

fovea centralis

rods

photoreceptor for low light/ black and white vision

cones

photoreceptors for brighter colors/ color vision

bipolar cells

ganglion cells

(nerve cells; axons combine to form optic nerve)

light passes thru the cornea, aqueous humor, pupil, lens and vitreous humor before reaching the retina. It passes to the back of the retina( optic nerve) where it reaches the photoreceptors cells (rods and cones)

pathway for light

sclera (cow)

cornea (cow)

optic nerve (cow)

ciliary body (cow)

iris (cow)

pupil (cow)

lens (cow)

vitreous humor (cow)

retina (cow)

tapetum lucidum (cow)

makes cow & cat eye reflect light; improves night vision

optic disc (cow)

dot in the middle??

sclera model

cornea model

pupil model

iris model

colored part of eye

chorid model

lateral rectus model

superior rectus model

medial rectus model

inferior rectus model

superior oblique model

inferior oblique model

optic nerve model

fovea centralis model

hole/ yellow part by retina (might be below white circle)

retina model

optic disc model

lens model

vitrous humor model

ciliary body model

light reaches photoreceptors cells → activates rods/cones → receptors send signals forward thru bipolar cells to ganglion cells → gang cells send action potential down axons → axons from gang cells extend towards optic disc → then it exits thru posterior of eye → combines to form optic nerve

signal pathway