Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 41.4, Problem 1SB
For vertebrate photoreception, define: (a) photopigment; (b) photoreceptor; and (c) receptive field.
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Chapter 41 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 41.1 - Prob. 1SBCh. 41.1 - Prob. 2SBCh. 41.2 - Prob. 1SBCh. 41.2 - What properties qualify proprioceptors as...Ch. 41.3 - What vibration-detecting systems are found in...Ch. 41.3 - Prob. 2SBCh. 41.4 - For vertebrate photoreception, define: (a)...Ch. 41.5 - How do we distinguish different kinds of smells?Ch. 41.5 - Prob. 2SBCh. 41.6 - Prob. 1SB
Ch. 41.7 - What are three ways electroreceptors are used in...Ch. 41 - An ambulance siren in close proximity to a dog can...Ch. 41 - Prob. 2TYKCh. 41 - Which of the following situations is associated...Ch. 41 - Prob. 4TYKCh. 41 - Prob. 5TYKCh. 41 - The eyes of vertebrates and cephalopods are...Ch. 41 - Which of the following events does not occur...Ch. 41 - Prob. 8TYKCh. 41 - Prob. 9TYKCh. 41 - Prob. 10TYKCh. 41 - Discuss Concepts In owls and many other birds of...Ch. 41 - Prob. 12TYKCh. 41 - Prob. 13TYKCh. 41 - Prob. 14TYKCh. 41 - Prob. 15TYKCh. 41 - Prob. 1ITDCh. 41 - Prob. 2ITDCh. 41 - Prob. 3ITD
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- Which statement regarding rods and cones is most accurate? a.) Rods and cones carry signals to the brain so an image can be formed. b.) Rods and cones refract light to focus it on the retina. c.) Rods and cones are photoreceptors, which detect light. d.) Rods and cones monitor the amount of light entering the eye and adjust the size of the pupil.arrow_forward3. Soru Which of the following is a false statement about photoreceptors of the eye? A) Cones are active at high light levels and have high spatial acuity. B) Rods are responsible for scotopic vision while cones are responsible for photopic vision. C) Rods are active at low light level and have low spatial acuity. D) There are two types photoreceptors: rods and cones. E) The ratio of rods to cones in the retina is higher in humans than it is in dogs.arrow_forward1) Teleost focus on nearby objects by _____. A) moving their lens forward in their eye further from the retina B) moving their lens backward in their eye closer to the retina C) contracting their ciliary muscle to release tension on the zonular fibers D) contracting their ciliary muscle to increase tension on the zonular fibers E) relaxing their ciliary muscle to put tension on the ciliary fibersarrow_forward
- The top three white boxes illustrated here refer to the_ olfactory bulb, lateral hypothalamus and optic chiasm(a) olfactory bulb, optic nerve and optic chiasm(a) olfactory tract, optic nerve and optic chiasm(a) pons, optic nerve and mamillary bodyarrow_forwardA reduction in sensitivity in the presence of constant stimulus is called: (a) transduction. (b) sensory coding. (c) line labeling. (d) adaptation.arrow_forwardYou are watching the stars at night, and you never seem to be looking at the right spot to catch the brightest meteors. Which of the following might explain this? a)Your fovea contains mostly cones; thus you see dim light especially well when looking right at it. b)Your peripheral retina contains more rods, which are more sensitive to dim light than cones; thus objects in your peripheral vision appear brighter in dim light situations. c)Detection of light depends mostly on its color rather than intensity; thus cones play a larger role in detection of light in dim light situations. d) all of the above. ( well explain the correct answer and type answer).arrow_forward
- Given that frogs are nearsighted in air, which statement is most likely to be true about their vision in water? (a) They are even more nearsighted; because water has a higher index of refraction than air, a frog’s ability to focus light increases in water. (b) They are less nearsighted, because the cornea is less effective at refracting light in water than in air. (c) Their vision is no different, because only structures that are internal to the eye can affect the eye’s ability to focus. (d) The images projected on the retina are no longer inverted, because the eye in water functions as a diverging lens rather than a converging lens.arrow_forwardWhich of the following statements about photoreceptors is true? A) There are more rod cells in the fovea of the eye, although overall there are more cones in the human eye. B) All of these options C) Photoreceptors are located near the front of the eye, in the cornea. D) There are two types of photoreceptors, rods and cones, that contain different photopigments.arrow_forwardIn the human visual pathway, after light passes through the cornea, it next (a) stimulates ganglion cells (b) passes through the lens (c) sends signals through the optic nerve (d) depolarizes horizontal cells (e) hyperpolarizes rod cellsarrow_forward
- Which one of the following statements about photoreception is true? a. Light detection is initiated by the absorbance of light (a photon) by a photopigment molecule. b. Light detection is synonomous with vision. c. Light detection is always initiated in a rod photoreceptor located in the retina. d. Only light in the visible range (between 400 and 700 nm wavelength) can be detected by animals. e. None of the above answer choices (neither A, nor B, nor C, nor D) is true.arrow_forwardMechanoreceptors that detect pressure changes in the walls of blood vessels and in portions of the digestive, reproductive, and urinary tracts are: (a) tactile receptors. (b) baroreceptors. (c) proprioceptors. (d) free nerve endings.arrow_forwardMost animals lack cones in their retinas. How, then, do such animals view the visual world?arrow_forward
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