Stimuli and Responses in Human (4)

Science

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Parts of the human eye and their functions (2)

Cornea - Transparent layer which refracts and focuses light onto the retina

Parts of the human eye and their functions (3)

Iris - The coloured part of the eye which controlsthe size of the pupils

Parts of the human eye and their functions (4)

Pupil - Opening in the centre of the iris which controls the quantity of light entering the eye

Parts of the human eye and their functions (5)

Aqueous humour - Transparent fluid which maintains the shape of the eyeball and focuses light into the eye

Parts of the human eye and their functions (6)

Conjunctiva - Transparent membrane which protects the front part of the sclera

Parts of the human eye and their functions (7)

Vitreous humour - Transparent jelly-like substance which maintains the shape of the eyeball and focuses light onto the retina

Parts of the human eye and their functions (8)

Blind spot - Part of the retina which is not sensitive to light as there are no photoreceptors and an exit point for all optic nerve fibres

Parts of the human eye and their functions (9)

Optic nerves - Nerve fibres which carry nerve impulses from the retina to the brain to be interpreted

Parts of the human eye and their functions (10)

Yellow spot - Part of the retina which is most sensitive to light as it has many photoreceptors.

Parts of the human eye and their functions (11)

Retina- Layer containing photoreceptors which detects light and produces nerve impulses

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