| Term | Definition |
|---|
| the sensory organs of the body consist of what five things | eyes ears nose tongue skin |
| the eye is situated in the bony .... | orbit of the skull |
| what are the appendages of the eye | eye brows eye lids lacrimal apparatus |
| the lacrimal apparatus do what | produce tears |
| the eye ball is constructed from three layers ... | sclera choroid retina |
| the lens ad fluid of the eye are called ... | aqueous and vitreous humour |
| the aqueous and vitreous humour do what ... | bend rays of light to focus upon the retina |
| the tough outer layer of the eyeball is alled ... | sclera |
| the front layer of the sclera is covered in | conjunctiva |
| the slcera is continuous with the ... | cornea |
| the middle layer of the eyeball is called ... | choroid |
| the choroid is a vascuar layer attache to the | sclera |
| the choroid layer of the eyeball is continuous with the ... | ciliary body |
| the iris has what in the middle? | a hole |
| in the hole in the iris is the ... | pupil |
| light rays enter and focus on the retina through the | pupil |
| the pupil cotnrols the amount of what entering the eye | light |
| the inner layer of the eye ball is called the ... | retina |
| the retina is attached to the ... | sclera |
| the retina contains nerve fibres which are the origin of what nerve | optic nerve |
| specialised light sensitive structures in the retina are called | cones and rods |
| the light sensitive structures cones and rods receive light and colour information for interpretation by the.... | brain |
| rods receive what information | light and dark |
| cones receive what information | colour |
| colour blindness arises from a lack or abnormality of which cells | cones |
| the optic nerve at the back f each eye conveys sensations from the retina to which area of the brain | occiputal |
| the optic nerve from each eye joins at an area called | optic chiasma |
| what light sensitive structure is most numerous in the macula | cones |
| the optic disc is situated | at the back of the eye where the optic nerve leaves the eyeball |
| the optic disc gives rise to everyones .... | blind spot |
| changes to the retina and evidence of effects of high blood pressure or cranial pressure can be viewed by looking at the .... | optic fundus |
| the eyes should alwyas move together giving what type of vision | binocular |
| whe the eyes move differently it is known as | strabismus |
| refraction is the term used to depict what ? | bending of light |
| short sighted is also known as | myopic |
| longsighted is also known as | hypermetropia |
| when the intra aqueous fluid fails to drain and intraocuar pressure rises and damage to the retina occurs - it is called | glaucoma |
| the lacrimal apparatus consists of | lacrimal ducts glands sac and naslacrimal duct |
| tears consist of | alkaline salty fluid |
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