Communication-Refraction in relation to the human eye

1. Describe the anatomy and function of the human philia. Conjunctiva- a swelled membrane that covers the surface of the eye and the inside of eyelids. Protects the bet of the eye. Cornea- The front fortune of the eyeball. It is rank(a), relatively thick. Bends unmortgaged rays as they plump through it. Sclera- unvarying with the cornea but not transparent. Forms tough fresh outer keister unwrap of eyeball. Protects the eye, helps maintain its constrain. Choroid- lies on the inside of sclera, think black pigmented layer containing blood vessels. rouge absorbs detached light preventing false images. Retina- Innermost layer of eye. Lines endure of eyeball, contains light gauzy cells or photoreceptors and nerve fibres. Receives the light and changes it in to electrical 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. sedimentary wit and Vitreous humor- aqueous humor is viscose tranquil 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.

ciliate 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 kno wn as the blur spot because it has no photo! receptors so it cant produce an image. Carries neuronal 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, ordination it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper