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level: Level 1

Questions and Answers List

level questions: Level 1

QuestionAnswer
fine tunes the focus of the light rays onto the fovea of the retina for clear visionlens
coloured portion of the eye- fucntion is to regulate the amount of light coming into the eyeiris
the hole in the centre of the eye where light enterspupil
a type of light sensitive cell in the retina of the eye that provides side vision and the ability to see in deem lightrod
a type of light senstive cell in the retina of the eye that provides colour vision and sharpe central visioncone
by cornea and lens involved bending light rays to focus an image on the central foveareflection
changing the shape of the lens to allow sharp focusing of light onto the retinaaccomodation
the smooth muscle of the iris that controls the amount of light entering the eye and helps prevent scattering of lightpupil constriction/ dilation
medial movement of the eyes to keep both focusing on an objectconvergence of the eyes
occipitalwhat is the primary visual and visual association area
photoreceptorswhat are the receptors involved
a protective bacterial enzyme that protects, cleans and lubricates the eyeballlysozyme
1. lacrimal gland 2. lacrimal ducts to canal 3. lacrimal sac 4. nasal crimal duct 5. nasal cavityflow of tears
the outter layer of the eyefibrous tunicn
the transparent layer that cover the iris 'window' into the eyecornea
the white of the eye, provides shape and support to the eyesclera
middle layer of the eyevasular tunic
is highly vascular, blood vessels provide nutrients to the eyechoroid
contains ciliary muscle that has smooth muscles that alter the shape and lens which is essential for focusciliary body
a layer at the back of the eyeball that contains cells sensitive to light, which trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed.retina