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, Problem 7TYK
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-protein–coupled 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.
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What statement is true regarding the retinal pigment epithelium?
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How are Ca2+ channels involved in phototransduction?
they cause neurotransmitter release even if no action potentials are produced
are not affected by PDE activation in the outer segments
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in darkness, they do not rely on CGMP levels
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is highest where cone outer segments increase in diameter
is lowest where retinal blood vessels are absent
is drastically less than that of rods in the fovea
is indicative of what areas are associated with acuity
The recycling of rhodopsin.
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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