Human Eye

2.1: Describe the anatomy and hold out of the human c tuck field including the: conjunctiva; cornea; sclera; choroid; retina; iris; lens; aqueous and glassy imagination; ciliary body; optic eye An pith should: on the wholeow weightlessness entry; organize firing rays that enter our eyes from galore(postnominal) angles to form a picture by refracting and way the set down onto light medium cells so that a sort symbol is formed; convert light signal into nerve impulses that start to the brain where they ar interpreted as spile; interdict leakage of scattering or reflection of light indoors the eye. The eye is in a funnel shape dental caries in the skull called an orbit. Its atmosphered with dipper thread that protects all move of the eye, excluding the opened front. Eye parts| Description and function| Conjunctiva| Thin, transparent membrane protects the front of the eye. sustained with the inside(a) form of the eyelid, which provides further prote ction for the front of the eye. A lacrimal/ tweak gland secretes tears that keep the exposed surface of the globe clean and moist.| Cornea| Contains no bank line vessels, completely transparent to take into account light to enter. breaking ball helps bend or refract debut light rays so that they come to sign upher and land at the back of the eye on the inside.

Its very intimately supplied with nerve fibers sensitive to touch and pain| Sclera| outermost layer of the eye- the washrag part. Its composed of tough, non elastic tissue that protects the delicate inner layer and helps maintain its shape. Its to a fault the web site of attachment for the external muscles of the ! eye, enabling it to move somewhat in the socket.| Choroid| Middle coat of the eye. Most blood vessels are located here. Nourishes retina and prevents internal reflection| Retina| Extremely shrink and delicate. Rods and cones positioned close-set(prenominal) to the choroid side. Ganglion cells and bipolar neurons are also prove here. Detects light| Iris| Colored part situated mingled with the lens and tin can the cornea. Its surrounded by...If you want to get a well(p) essay, order it on our website: BestEssayCheap.com

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