Describe the functions of :
i) iris
ii) pupil
iii) lens
iv) cornea
v)retina
vi) ciliary muscle
vii) vitreous humour
Please help me friends!!
Answers
Answer:
Iris is a flat coloured ring shaped membrane behind the cornea of the eye which adjust the opening of pupil.
Pupil is a hole located in the centre of the iris of the eye that allows light to go through to retina.
Eye lens is a transparent biconvex structure in the eye that helps to refract the light on retina.
Cornea is a the protective part of our eye.It is a transparent part which helps in refracting and bending of light to the inner parts of our eye.
Retina is a layer at the back of the eyeball that contains light sensitive cells which trigger nerve impulses to the brain to form a visual image.
Cilliary muscle is a part of the eye that connects the iris to the choroid.It helps in focusing different objects in different distances at retina.
Vitreous humour is the transparent tissue filling the eyeball behind the lens.It helps to hold the spherical shape of our eye and protects it's parts.
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Answer:
already given answer!!!!!!!!......