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Terms used for eye (2)
1. Ocular
2. ophthalm (combining form)
Name the 3 major layers of the eyeball
1. Fibrous layer
2. Vascular layer
3. Nervous layer
Name the 3 structures in the fibrous layer.
1. Cornea
2. Sclera
3. Limbus
Define each fibrous layer structure:
1. Transparent, admits light to interior of the eye
2. White of the eye
3. Junction of cornea and sclera
Name the 3 parts of the Vascular layer
1. Choroid
2. Iris
3. Ciliary body
Define each vascular layer structure:
1. Between sclera and retina. pigmented and vessels. forms the tapetum.
2. Pigmented muscular diaphragm. Controls amount of light that enters posterior part of eyeball
3. Ring shaped structure behind the iris that adjusts the shoe of the lens to allow near and far vision
Define suspensory ligaments
Tiny ligaments that attach to the periphery of the lens of the eye and connect to ciliary body
How the ciliary muscles exert and relieve tension on the lens to adjust vision for distance
Name the only part in the nervous layer of the eyeball.
Retina
Describe the retina
Multilayers that lines the back of the eye
Contains the sensory receptors for vision- rod and cones ( photoreceptor cells)
Contains optic disc
Name the 5 layers of the retina
1. Pigment
2. Photoreceptor
3. Bipolar cell
4. Ganglion cell
5. Layer of nerve fibers
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