1. Describe the anatomy and function of the human mettle. Conjunctiva- a fair membrane that covers the surface of the eye and the inner of eyelids. Protects the cause of the eye. Cornea- The front fortune of the eyeball. It is logical, relatively thick. Bends rest rays as they fling through it. Sclera- unvarying with the cornea but not transparent. Forms tough dust coat outer keister unwrap of eyeball. Protects the eye, helps maintain its invent. Choroid- lies on the inside of sclera, think black pigmented layer containing blood vessels. rouge absorbs hurl light preventing false images. Retina- Innermost layer of eye. Lines brook of eyeball, contains light gauzy cells or photoreceptors and nerve fibres. Receives the light and changes it in to galvanic impulses that travel to the wiz via the optic nerve. Iris- coloured part at front of eye, composed of muscles. Regulates the nub of light entering the eye. Lens- transparent biconvex protein disc lowlife the pupil. Focuses light rays on to the retina. aqueous wit and Vitreous humor- aqueous humor is viscose molten that fills the front chamber of the eye. Vitreous humor is jelly-like and fills the larger back chamber of the eye. Help keep the eyeball in shape and also wrinkle rays of light as they pass through.
ciliated body- connects the choroid with the lens. It contains suspensory ligaments and ciliate muscles. Ligaments hold the lens in position and ciliary muscles alter the shape of the lens. optical nerve- connects eye with brain. The region where the optic nerve leaves the eye is known as the blur sp ot because it has no photoreceptors so it ca! nt produce an image. Carries anxious(p) signals from retina to visual cerebral cortex of the brain, which interprets them as, images. 2. a) Explain the term refraction in relation to... If you want to frustrate a full essay, bless it on our website:
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