Eye Flashcards
(15 cards)
What is the function of the choroid?
Supplies oxygen and nutrients to the eye.
What is the sclera?
Strong layer that maintains the shape of the eye and protects it.
What does the eye lens do?
Transparent and elastic convex lens which focuses light onto the retina.
What is the role of the ciliary muscle?
Muscle that changes the thickness of the eye lens through contractions and relaxations.
What are suspensory ligaments?
Strong fibres which hold the eye lens in its position.
What is the function of the retina?
Layer containing photoreceptors which detects light and produces nerve impulses.
What is the cornea?
Transparent layer which refracts and focuses light onto the retina.
What is the yellow spot in the retina?
Part of the retina which is most sensitive to light as it has many photoreceptors.
What does the iris control?
The size of the pupil.
What are optic nerves?
Nerve fibres which carry nerve impulses from the retina to the brain to be interpreted.
What is the pupil?
Opening in the eye that controls the quantity of light entering the eye.
What is the blind spot?
Part of the retina which is not sensitive to light as there are no photoreceptors.
What is vitreous humour?
Transparent jelly-like substance which maintains the shape of the eyeball and focuses light onto the retina.
What is the conjunctiva?
Transparent membrane which protects the front part of the sclera.
What is aqueous humour?
Transparent fluid which maintains the shape of the eyeball and focuses light into the eye.
