Biology: Concepts and Investigations
5th Edition
ISBN: 9781260542202
Author: Marielle Hoefnagels
Publisher: Mcgraw-hill Higher Education (us)
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Question
Chapter 27, Problem 11WIO
Summary Introduction
To explain:
The roles of rods and cones in the sense of sight.
Concept introduction:
Photoreceptors are the sensory receptors which is responsible for the detection of light. Photoreceptors are of two types the rods and cones. These photoreceptors are present in the retina of the human eye. These photoreceptors transmit the neural impulses to the brain and induce a sense of sight.
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Chapter 27 Solutions
Biology: Concepts and Investigations
Ch. 27.1 - Prob. 1MCCh. 27.1 - Prob. 2MCCh. 27.1 - Prob. 3MCCh. 27.1 - Prob. 4MCCh. 27.1 - Prob. 5MCCh. 27.2 - Prob. 1MCCh. 27.2 - Prob. 2MCCh. 27.3 - Prob. 1MCCh. 27.3 - Prob. 2MCCh. 27.4 - Prob. 1MC
Ch. 27.4 - Prob. 2MCCh. 27.4 - Prob. 3MCCh. 27.5 - What are the parts of the ear, and how do they...Ch. 27.5 - How does the vestibular apparatus provide the...Ch. 27.6 - Prob. 1MCCh. 27.6 - Prob. 2MCCh. 27 - As you snuggle into bed, you feel the weight of...Ch. 27 - Prob. 2MCQCh. 27 - Prob. 3MCQCh. 27 - The structures that enable bees to see flowers are...Ch. 27 - What is the function of hair cells in the cochlea?...Ch. 27 - A male moth uses his antennae to detect the...Ch. 27 - Prob. 2WIOCh. 27 - Prob. 3WIOCh. 27 - Try as you might, you cannot tickle yourself....Ch. 27 - Prob. 5WIOCh. 27 - How does the nervous system differentiate among...Ch. 27 - Prob. 7WIOCh. 27 - Prob. 8WIOCh. 27 - Explain why some people hold their nose when...Ch. 27 - Suppose you put on glasses belonging to someone...Ch. 27 - Prob. 11WIOCh. 27 - Prob. 12WIOCh. 27 - In a rare condition called synesthesia,...Ch. 27 - Prob. 1PITCh. 27 - Prob. 2PIT
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- Larry 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_forwardHow do somatic sensations differ from special senses?arrow_forwardHow does the eye focus the light rays of an image? What do nearsighted and farsighted mean?arrow_forward
- In what ways do the human visual system's temporal features vary from its optical properties?arrow_forwardWhat are the neural pathways and mechanisms involved in the processing of visual information, and how do they differ from those involved in processing information from other sensory systems such as hearing, taste, and smell?arrow_forwardWhat distinguishes human vision's temporal and optical properties?arrow_forward
- What is the photoreceptor unit of a compound eye? How does this unit adjust to varying amounts of light?arrow_forwardWhat is the trade-off between acuity and sensitivity and how does the visual system deal with this?arrow_forwardHere you see an astigmatism illustration. Please explain why astigmatisms cause blurred vision in the context of our sense of sight. Please do not merely say “The light rays do not hit the focal point”. Please explain why that matters for the sense of sight.arrow_forward
- Explain the function of magno and parvo cells and how do they work together in our visual system?arrow_forwardDescribe the structures of the human eye that light passes before reaching the retina. What are the functions of each of these structures?arrow_forwardExplain the normal functioning of the eye to allow us to have visual acuity. What is meant by visual acuity? How does the eye adjust to facilitate this? Specifically, how do changes in near-point accommodation and astigmatism affect acuity? What is the problem with changes in near-point accommodation and astigmatism and why are they problematic? How can each of these be measured? Can these conditions be corrected? If so, how? Do these conditions change as we age?arrow_forward
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