9. Describe how each of the following modifications to structures of the eye will affect primate vision: You stop ingesting Vitamin A and beta-carotene (precursor of retinal). Your lens hardens, losing its ability to get thinner when stretched. Muscles of the ciliary body weaken and cannot contract as strongly. The dilator muscles of your iris can no longer contract.

9. Describe how each of the following modifications to structures of the eye will affect primate vision: You stop ingesting Vitamin A and beta-carotene (precursor of retinal). Your lens hardens, losing its ability to get thinner when stretched. Muscles of the ciliary body weaken and cannot contract as strongly. The dilator muscles of your iris can no longer contract.

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter14: The Somatic Nervous System

Section: Chapter Questions

Problem 6ILQ: Watch this video (http://openstaxcollege.org/l/l_3-D1) to learn more about how the brain perceives...

See similar textbooks

Similar questions

Please ASAP Thank you. 1. What is the basis for human color vision? a. Different spectral sensitivity of the three different kinds of retinal cones b. Different spectral sensitivity of rods c. Spectral filters in the eye that separate light into its spectral components before it reaches the retina d. Processing that occurs in the neural circuits in the retina 2. Imagine yourself locked in a room without any light source for 30 minutes. Then let’s imagine that someone shines a red light in the corner of the room. One should expect that the rod cells in your retina will: a. Be more sensitive to the red light after the 30 minutes of darkness as compared to earlier b. Be less sensitive to the red light after the 30 minutes of darkness as compared to earlier c. Be equally sensitive to the red light as before the 30 minutes of darkness e. Rod cells do not respond to red light
2. Most ground-dwelling mammals have eyes that look to theside, giving them a wide field of view to help them avoidpredators. Many tree-dwelling mammals have eyes that aredirected forward, giving them better 3-D vision. Suggest anevolutionary explanation for why ground-dwelling humanshave forward-directed eyes.
4. Use what you know about the anatomy and physiology of special sensory organs to evaluate how each of the following changes will impact an Animal's ability to sense its environment. A mutation produces a non-functional ligand-gated channel, which normally binds glucose. Which special sense(s) will be impacted by this mutation? The stereocilia on "hair cells" become stiffer as Vertebrates age. Identify the senses that will be impacted by this change; then, describe one specific example of how the perception of a stimulus will change due to this age related stiffening.
5. My cat Mia has poor color vision, but can see very well in dark environments. What characteristic of her retina could best explain this? a. It mostly has ON bipolar cells b. It mostly has OFF bipolar cells c. It has many more rods than cones, particularly around the fovea d. It has many more cones than rods, particularly around the fovea e. It has very few photoreceptors and many more retinal ganglion cells
1.From an evolutionary standpoint, can you think of reasons why some animals' eyes consist entirely of rods, other animals' eyes have only cones, and those of still Others, such an humans, have both cones, and rods?2. How might you use measurements of the just noticeable difference (jnd) in loudness to describe the change in the auditory environment caused by the addition of a new airline to those serving your local airport? Would you be able to explain your measurement method to a panel of concerned citizens?
Which of the following events does not occur during light absorption in the vertebrate eye? The retinal component of rhodopsin changes from cis to trans form. Rhodopsin, a G-proteincoupled receptor, triggers a signaltransduction pathway to close Na+ channels in the plasmamembrane. The light stimulus passes from rods and cones to bipolar cellsand horizontal cells and then to ganglion cells, whose axonscompose the optic nerve. As light absorption increases, the rhodopsin response causesan increase in the release of neurotransmitters. When integrating information across the retina, horizontalcells connect the rods and cones, and amacrine cells join with the bipolar cells and ganglion cells.
Watch this video (http://openstaxcollege.org/l/l_3-D1) to learn more about how the brain perceives 3-D motion. Similar to how retinal disparity offers 3-D moviegoers a way to extract 3-D information from the two-dimensional visual field projected onto the retina, the brain can extract information about movement in space by comparing what the two eyes see. If movement of a visual stimulus is leftward in one eye and rightward in the opposite eye, the brain interprets this as movement toward (or away) from the face along the midline. If both eyes see an object moving in the same direction, but at different rates, what would that mean for spatial movement?
Which of the following situations is associated with movement and position in the human body? a. Statoliths in statocysts bend sensory hairs and trigger actionpotentials. b. If sensory hairs in the utricle are oriented horizontally andthose in the saccule are oriented vertically, the person is lyingdown. c. When the head rotates, the endolymph in the semicircularcanal pulls the cupula with it to activate sensory hair cells. d. Displacement of the utricle and saccule generates actionpotentials. e. If the body is spinning at a constant rate and direction, thecupula is displaced and action potentials are initiated.
4. Describe the roles of the retina and the optic nerve in vision.
5. Review of sensory systems Choices: Olfaction; Audition; Nociception; Cones; Kinesthesis; Vestibular; Rods On your retina the and in combination these cells produce signals for all the colors of visible light. b. cells react to different wavelengths in particular blue-violet, red, and green a. Our sense of sound is called membrane and these cells can be permanently damaged if exposed to loud noise.. C. The sense of smell is called flavor of foods as you detect the spices and aromas of the dish. and depends on the movement of the hair cells on the basilar and it plays an important role in the perception of the d. contributes to staying balanced by providing information about position and motion of the body as the brain receives signals from your joints, tendons and muscles. The sense of pain is called injury, the more cells stimulated, the more signals to the brain, the more it hurts. е. and it relates to the number of cells stimulated by the
2. A 32-year-old man was diagnosed with damage of the central part of the optic chiasm. Draw a diagram of the visual analyzer and indicate its main structures. How will the transmission of information from the retina to the centers of the cerebral cortex change? How will change the field of view?
4. What feature distinguishes between rod and cone photoreceptor responses in the retina? A. Convergent circuitry enhances the sensitivity of input from rod photoreceptors. B. Rod photoreceptors are highly sensitive, as they can respond to only 1 photon of light. C. All of the answers. D. One-to-one connections with bipolar and retinal ganglion cells underlies the high-resolution input from cone photoreceptors. E. None of the answers.