Fill-in (complete each statement with the correct term) 1-2. _?_ is the sharpness of the perceived visual image and is often evaluated in clinical situations with the _?_ eye test. 3. A person with 20-100 vision has (normal/abnormal) vision. 4. Abnormal curvature of the cornea or lens is called _?_. 5. The ability to adjust the focusing apparatus of the eye to account for changes in distance from the viewed object is called _?_. 6. When accommodating, the pupil and the _?_ may change shape. 7. The blind spot is actually the _?_. 8. Black-and-white vision is also called _?_ vision. 9. Rods are involved in (bright-light/dim-light) vision. 10. Cones are involved in (bright-light/dim-light) vision. 11. Rods are involved in (black-and-white/color) vision. 12. Cones are involved in (black-and-white/color) vision. 13. Individuals with a lack of green-sensitive cones are said to have _?_, a form of red-green color blindness. 14. Individuals with a lack of red-sensitive cones are said to have _?_, a different form of red-green color blindness. 15. Color blindness usually results from _?_.
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This means that what a person with normal vision can see at 100 feet, a person with 20/100 vision can only see at 20 feet. Therefore, this vision is considered abnormal. Show more…
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8. Using key choices, identify the parts of the eye described in the following statements. Insert the correct term or letter response in the answer blanks. KEY CHOICES: A. Aqueous humor B. Canal of Schlemm C. Choroid coat D. Ciliary body E. Cornea F. Fovea centralis G. Iris H. Lens I. Optic disk J. Retina K. Sclera L. Suspensory ligaments M. Vitreous humor 1. Attaches the lens to the ciliary body 2. Fluid that fills the anterior chamber of the eye; provides nutrients to the lens and cornea 3. The "white" of the eye 4. Area of retina that lacks photoreceptors; the blind spot 5. Contains muscle that controls the shape of the lens 6. Nutritive (vascular) tunic of the eye 7. Drains the aqueous humor of the eye 8. Tunic, containing the rods and cones 9. Gel-like substance filling the posterior cavity of the eyeball; helps to reinforce the eyeball 10. Heavily pigmented tunic that prevents light scattering within the eye 11. ___ 12. Smooth muscle structures (intrinsic eye muscles) 13. Area of acute or discriminatory vision 14. ___ 15. ___ 16. ___ 17. Refractory media of the eye 18. Anteriormost part of the sclera—your "window on the world" 19. Tunic composed of tough, white fibrous connective tissue 9. Using the key choice terms given in Exercise 8, identify the structures indicated by leader lines on the diagram of the eye in Figure 8-2. Select different colors for all structures provided with a color-coding circle in Exercise 8, and then use them to color the coding circles and corresponding structures in the figure.
Madhur L.
At approximately what rate does the optic nerve transmit visual signals to the brain? Group of answer choices 1,000 bits per second 100 million bits per second 20 million bits per second 50,000 bits per second Question 2 The ______ is the transparent outer coat of the front of the eye. Group of answer choices sclera pupil cornea iris Question 3 The place of central focus on the retina is called the ______. Group of answer choices fovea declan disk lamella optic disk Question 4 The cell membranes of photoreceptors contain sodium and calcium channels that are normally ______. Group of answer choices closed depolarized open hyperpolarized Question 5 The blind spot is the location on the retina where ______. Group of answer choices there are no photoreceptors the cones are most densely packed night vision and visual acuity meet the rods are most densely packed Question 6 After observing the effect of passing light through a prism, Newton proposed in 1672 that white light was composed of 7 fundamental colors. It was later proven false by the ______ theory. Group of answer choices Young-Helmholtz trichromatic retinotopic opponent process Question 7 The trichromatic theory says that ______. Group of answer choices just three colors account for all the possible color combinations that can be distinguished color vision is explained by opposing neural processes red, blue, and green produce white when combined red, blue, and green produce black when combined Question 8 The ______ cell is a neuron in the visual cortex that responds best to a line or an edge with a particular orientation and will continue to respond if the line or edge moves within a limited range. Group of answer choices simple complex ganglion motion hypercomplex Question 9 The dorsal stream is also called the ______ pathway due to its role in action. Group of answer choices where when how why Question 10 Synesthesia is ______. Group of answer choices a stimulation in one sense triggering an experience in another insufficient binding of sensory information over-binding of sensory information decreased communication among brain areas
Asma V.
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