Eye Anatomy and Physiology
Across
- 2. Concave lenses help treat nearsightedness by moving the focal point further _____ and forcing the light to spread out and diverge
- 5. This tunic is the composed of the retina and is the site of photoreception and it absorbs light...
- 7. In order to see things _____ away, the ciliary body must relax
- 9. In order to see things ______ up, the ciliary body must contract tightly
- 10. The ______ centralis is the "sweet spot" of our vision and allows us to see things extremely clearly (small dot where visioned SHOULD be focused)
- 11. When the eye is in darker conditions, it undergoes _____ in order to let more light in
- 13. This tunic includes the iris, ciliary body, and choroid and helps in focusing images, providing nutrients, regulating the AMOUNT of light entering the eye etc...
- 14. The ______ humor is a thick jelly that is responsible for pressing the retina against the internal eye and keeping the circular shape of the eye
- 19. When the eye is in bright conditions, it undergoes ______ in order to reduce the amount of light entering
- 20. The macula _____ is the yellow are surrounding the fovea centralis and absorbs extra light so our eye does not become damaged
- 22. When a lens is thick in the center but thinner at the edges it is considered...
- 23. This highly vascularized layer of the eye delivers oxygen and nutrients to the retina...
- 25. Convex lenses help treat farsightedness by moving the focal point _____ and forces the light to converge inward quicker
- 27. A young girl is said to have a focal point that converges in front of the retina as her eye is elongated. Her doctor calls her nearsighted which is also called...
- 29. The ______ body is the muscles behind the lens that help change its thickness
- 30. The part of the eye that contains color and is responsible for dilating and contracting the eye
- 32. The ______ of the ganglion are long and run all the way to the optic nerve in the back of the eye to be processed
- 33. The part of the eye that is responsible for changing its shape and thickness in order to allow people to see things farther or closer away
Down
- 1. The signal gets sent all the way to the front of the eye to the _______, which is another word for a cluster of nerve cells
- 2. When the pupil constricts, it causes the lens to _____
- 3. These receptors help us see green, blue, and red pigment
- 4. The fluid that sits behind the cornea is called ____ and is responsible for helping the cornea keep its shape and delivers nutrients to both the lens and cornea
- 6. The _____ phase refers to the first phase of sight in which light hits the rods and cones and creates a signal
- 8. The layer of the eye that contains photoreceptors to see color and creates impulses that get sent out the optic nerve to the brain
- 12. These receptors help us see the colors of grey and in the dark...
- 15. Once the rods and cones get excited, the signal gets sent back to the front of the eye via a bunch of different cells that create a ______
- 16. The ______ nerve is responsible for sending all the visual stimuli to the brain
- 17. A young man is said to have a focal point that converges behind the retina as his eye is too short. His doctor calls him farsighted which is also called...
- 18. This tunic includes the sclera and cornea, and its job is to protect and shape the eye while also providing a place for muscle attachment...
- 21. The bending of light rays is referred to as...
- 23. The clear covering of the eye that helps refract light through the pupil toward the back of the eye...
- 24. The hole in the eye that allows light to pass through it is called...
- 26. The optic _____ is the eye's blind spot where all the nerves of the retina meet up to be connected and sent out the optic nerve
- 28. When a lens is thick at the edges but thinner at the center it is considered...
- 31. The outer white layer of the eye that plays a key job in protection as well as providing a play for the eye muscles to attach is called the...