Mindtap Biology, 1 Term (6 Months) Printed Access Card For Starr/taggart/evers/starr's Biology: The Unity And Diversity Of Life
15th Edition
ISBN: 9781337408493
Author: STARR, Cecie; Taggart, Ralph; Evers, Christine; Starr, Lisa
Publisher: Cengage Learning
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Chapter 33, Problem 1CT
Summary Introduction
To explain: The presence of light-reflecting material in eyes of nocturnal carnivores maximizes the degree to which light excites photoreceptors and also causes the perceived image to be blurred.
Introduction: Nocturnal animals refer to animals that are awake and active during the night. They have good night vision, keen senses of smell, touch, and hearing. They consist of a layer of cells tapetum lucidum behind their retina. It reflects light back through the eye. This enables them to see in dim light or dark.
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Describe the functions of the four photoreceptorproteins in human vision.
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Chapter 33 Solutions
Mindtap Biology, 1 Term (6 Months) Printed Access Card For Starr/taggart/evers/starr's Biology: The Unity And Diversity Of Life
Ch. 33 - Occupational Hearing Loss Frequent exposure to...Ch. 33 - Occupational Hearing Loss Frequent exposure to...Ch. 33 - Prob. 3DAACh. 33 - Prob. 4DAACh. 33 - The pain of heartburn is an example of a ___ . a....Ch. 33 - ___ is defined as a decrease in the response to an...Ch. 33 - Which is a somatic sensation? a. taste b. smell c....Ch. 33 - Chemoreceptors play a role in the sense of ___ ....Ch. 33 - In the ___, neurons are arranged like maps that...Ch. 33 - Mechanoreceptors in the ___ send signal, to the...
Ch. 33 - Prob. 7SQCh. 33 - Prob. 8SQCh. 33 - The organ of Corti contains receptors that signal...Ch. 33 - Night vision begins with stimulation of ___ . a....Ch. 33 - Visual accommodation involves adjustment to the...Ch. 33 - When you view a close object, your lens gets ___ ....Ch. 33 - Defective or missing ___ cause mJor blindness. a....Ch. 33 - ___ causes the pupil to widen. a. Low light b....Ch. 33 - Match each structure with its description. _____...Ch. 33 - Prob. 1CTCh. 33 - A compound extracted from the leaves of the shrub...Ch. 33 - Most bats eat insects or fruit. Vampire bats,...Ch. 33 - Prob. 4CT
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- For vertebrate photoreception, define: (a) photopigment; (b) photoreceptor; and (c) receptive field.arrow_forwardOccupational Hearing Loss Frequent exposure to loud noise of a particular pitch can cause loss of hair cells in the part of the cochlea that responds to that pitch. People who work with or around noisy machinery are at risk for such frequency-specific hearing loss. Taking precautions such as using ear plugs to reduce sound exposure is important. Noise-induced hearing loss can be prevented, but once it occurs it is irreversible because dead or damaged hair cells are not replaced. FIGURE 33.24 shows the threshold decibel levels at which sounds of different frequencies can be detected by an average 25-year-old carpenter, a 50-year-old carpenter, and a 50-year-old who has not been exposed to on-the-job noise. Sound frequencies are given in hertz (cycles per second), The more cycles per second, the higher the pitch. FIGURE 33.24 Effects of age aria occupational noise exposure. The graph shows the threshold hearing capacities fin decibels) for sounds of different frequencies (given in hertz) in a 25-year-okj carpenter (blue). a 50-year-old carpenter (red), arid a 50-year-ofd who did not have any on-the-job noise exposure (brown). 1. Which sound frequency was most easily detected by all three people?arrow_forwardLarry goes to the doctor complaining that he cant see the right side of the visual field with either eye. Where in the visual signal-processing pathway is Larrys problem occurring?arrow_forward
- What is meant by the statement Vision happens mainly in the brain?arrow_forwardWatch 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?arrow_forwardWhen light hits the center of an ON-center receptive field, which of the following processes occur: a. Photoreceptors release more glutamate; bipolar cells release more glutamate; retinal ganglion cells decrease rate of APs. b. Photoreceptors release less glutamate; bipolar cells release less glutamate; retinal ganglion cells decrease rate of APs. c. Photoreceptors release less glutamate; bipolar cells release more glutamate; retinal ganglion cells increase rate of APs. d. Photoreceptors release more glutamate; bipolar cells release more glutamate; ganglion cells increase rate of APs.arrow_forward
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