Across
- 2. any of three layers of the wall of the eye
- 3. anterior convex transparent "window"; no blood vessels; refracts light; from deep to superficial: simple squamous, collagen, stratified squamous
- 5. ___ reflex; alters pupil size in response to light; controlled by ANS
- 10. the sense of sight
- 11. ___ pupillae; smooth muscle that constricts the pupil
- 12. ora ___; the jagged edge; boundry between photosensitive and other parts of retina; tubelike structures
- 13. ___layer of the retina; houses photoreceptors and associated neurons; receives light and converts it to nerve signals
- 15. a type of cell found in the outermost layer of the neural layer of the retina; features rods and cones
- 17. what gives eyes color; most anterior region of uvea; contains smooth muscles, melanocytes, vessels, neural structures, and the pupil
- 18. structure formed by cells that have lost organelles and been filled with crystallin protein; enclosed by dense, fibrous elastic capsule and controlled by ciliary muscle
- 20. ___ cells; a retinal interneuron that regulates signals between bipolar and ganglion layers
- 23. ___ humor; transparent, gelatinous fluid first produced in embryonic development; V-Humor
- 24. an opening in the center of the iris connecting two chambers; has two special muscles that react to ANS
- 27. ___ structures; structures that support the eye and vision, but are not part of the eye; eyebrows, eyelids, eyelashes, conjunctiva, lacrimal glands, and the six extrinsic eye muscles
- 30. ___ cells; innermost layer of neural layer; where axons gather at optic disc
- 31. the neural tunic; most inner layer of eye wall
- 32. posterior region of the uvea; capillaries nourish retina; melanocytes make melanin to absorb extraneous light
- 33. also called "uvea"; the middle layer of the cell wall, with three regions
Down
- 1. the "whites of the eyes"; dense, irregular CT that protects internal elements and provides attachment for extrinsic muscles
- 4. ___humor; transparent, watery fluid continuously produced by ciliary processes; A-Humor
- 6. ___ cells; dendrites that receive synaptic input from photoreceptor layer
- 7. ___ cells; a retinal interneuron that regulates signals between photoreceptor and bipolar layers
- 8. ___ pupillae; smooth muscle that opens the pupil
- 9. corneal-scleral junction
- 14. ___ disc; the blind spot; location where optical axons converge to send signals
- 16. either of two internal compartments of the eye
- 19. how A-humor works; plasma filtered by capillaries into posterior chamber, then circulates through pupil to anterior chamber and drains from slceral venous sinus
- 21. ___ cavity; contains circulated A-Humor to nourish and oxygenate lens and inner cornea; has two chambers separated by iris
- 22. the main sensory organ for vision; almost spherical, contains receptors and support tissue
- 25. ___ layer of the retina; internal to choroid; provides vitamin A for photoreceptors and absorbs stray light
- 26. ___ cavity; contains permanent V-Humor to maintain eye shape and keep retina flush against the back of the eye
- 28. an eye condition caused by A-Humor drainage failure
- 29. the tough, external layer of the eye wall
- 32. ___ body; location of smooth muscles and capillary processes for A-humor; anterior to choroid