Anatomy Flashcards
what 2 parts make up the fibrous layer of the eye
sclera and cornea
what 3 parts make up the vascular layer (uvea) of the eye
iris
ciliary body
choroid
functions of ciliary body
controls iris, shape of lens and secretion of aqueous humour
three layers of the eye
fibrous
uvea (vascular layer)
retina
what secretes aqueous humour
ciliary body
where is aqueous reabsorbed
into scleral venous angle (canal of schlemn) at iridocorneal angle
what vessels run through the centre of the optic nerve
central artery of the retina
central vein of the retina
where does the inferior ophthalmic vein drain mainly into
superior ophthalmic vein
where is your blind spot, and why is it a blind spot
optic disc, there are no photoreceptors in the optic disc
where has the greatest density of cones
the fovea of the macula
where is the area of most acute vision in the eye
fovea
what is light from objects in the right visual field processed by
left primary visual cortex
which muscle closes the eyelid? which part closes eyelid tightly and which closes it gently?
orbicularis oculi
- orbital part closes it tightly
- palpebral part closes it gently
what is the function of muller’s muscle
maintains elevation of upper eyelid.
sympathetic innervation - helps widen eyes in fight or flight
where does lacrimal fluid drain
through nasolacrimal duct into the inferior meatus
