Essentials of Human Anatomy & Physiology
11th Edition
ISBN: 9780133481662
Author: Elaine N. Marieb
Publisher: PEARSON
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Question
Chapter 8, Problem 23SAE
Summary Introduction
To review:
The mechanism behind the color vision when eye consists of merely three types of cones.
Introduction:
The color is perceived light with different wavelengths are selectively hindered with the matter such as when the light is absorbed, refracted, diffracted, scattered, or reflected on their way to the eyes.
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We have three types of cones in the retina. Explain how we can see a large range of colors with only three types of cones:
Which of the following is the best explanation of why it is difficult to discriminate the color of an
object at night?
Rods contain a single visual pigment.
As many as 100 cones may converge on one ganglion cell.
Cones come in three types, each sensitive to different wavelengths of light.
The fovea are densely packed with cones.
When the human eye is in complete darkness, how do the cones of the eye respond?
Only one type is stimulated
None of the types are stimulated
All types are stimulated
Only two types are stimulated
Chapter 8 Solutions
Essentials of Human Anatomy & Physiology
Ch. 8 - More than one choice may apply. Which of the...Ch. 8 - More than one choice may apply. Identify the...Ch. 8 - Prob. 3MCCh. 8 - Which cranial nerve controls contraction of the...Ch. 8 - The cornea is nourished by a. corneal blood...Ch. 8 - When the eye focuses for far vision, a. the lens...Ch. 8 - Convergence a. requires contraction of the medial...Ch. 8 - Prob. 8MCCh. 8 - Prob. 9MCCh. 8 - Prob. 10MC
Ch. 8 - Prob. 11SAECh. 8 - Prob. 12SAECh. 8 - 13. Diagram and label the internal structures of...Ch. 8 - Prob. 14SAECh. 8 - Prob. 15SAECh. 8 - 16. What is the blind spot, and why is it so...Ch. 8 - What name is given to the structure that controls...Ch. 8 - What is the fovea centralis, and why is it...Ch. 8 - Prob. 19SAECh. 8 - Describe the difference between the photopupillary...Ch. 8 - 21. Define hyperopia, myopia, and emmetropia.
Ch. 8 - Prob. 22SAECh. 8 - Prob. 23SAECh. 8 - Prob. 24SAECh. 8 - Many students struggling through mountains of...Ch. 8 - Prob. 26SAECh. 8 - Prob. 27SAECh. 8 - Prob. 28SAECh. 8 - Prob. 29SAECh. 8 - Prob. 30SAECh. 8 - Prob. 31SAECh. 8 - Prob. 32SAECh. 8 - Prob. 33SAECh. 8 - Which special sense requires the most learning?Ch. 8 - 35. For each of the following descriptions,...Ch. 8 - Prob. 36CAQCh. 8 - Prob. 37CAQCh. 8 - Prob. 38CAQCh. 8 - Brandon suffered a ruptured artery in his middle...Ch. 8 - Prob. 40CAQCh. 8 - Kathy visits her Optician as she has been...Ch. 8 - 42. Julie and her father love to find the...Ch. 8 - Prob. 43CAQCh. 8 - 44. Mrs. Garson has an immune disorder that causes...Ch. 8 - Prob. 45CAQ
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- If all neurons transmit the same type of message, how do you know the difference between sound and light? How are you able to distinguish between an intense pain and a mild one? How are these discriminationsadaptive?arrow_forwardHow do we see different colors?arrow_forwardExplain how the number of rod or cone cells synapsing on asingle ganglion cell allows cones to produce a clearer image.arrow_forward
- Claude Monet was an artist who was known for his impressionist paintings. Later in life, the choices of colors in his paintings changed. These color choices were the result of a visual disorder. What is the visual disorder and why did it affect his choice of colors?arrow_forwardThe fluid that fills the cochlear duct, where the organ of Corti is located, is called____________. which of the following is a proprioceotor? Meissner's corpuscule muscle spindle Ruffini's corpuscule Merkel disc pain receptor Which of the following helps to explain why stimulation of cones results in more acute vision than stimulation of rods? Cones are more sensitive to color than rods are Cones require abundant light in order to be stimulated Rods are very sensitive, and can be stimulated even in very low light, so the signals all bleed together Cones have an almost 1:1 relationship with their axon pathways back to the cortex Cones are highly concentrated in the fovea, and rods are notarrow_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
- Why do rods provide greater visual sensitivity while cones provide better acuity?arrow_forwardcolor blindness can result from the loss of specific types of cons or it can occur in individuals having fewer cones of a given type.an individual has 50% lesss than the normal number of green cone photoreceptors in his retina how would this affect his visionarrow_forwardHuman color vision is "produced" by the nervous system based on how three different cone receptors interact with photons oflight in the eye. These three different types of cones interact with photons of different frequency light, as indicated in the following chart:arrow_forward
- There are a number of reasons for vision loss, both natural and unnatural. Use a blindfold to remove your sense of vision. how well your other senses adapt to the lack of visual input. How familiar is it? How does your perception of distance change?arrow_forwardWhy is it difficult to see colors in dim light?arrow_forwardSelect the options that properly describe the function and features of cones. A bright blue light would stimulate cones more than rods. cones can see red, blue and green. cones view low light conditions in grayscale. In low light conditions cones perceive color as blue scale. In low light conditions cones perceive color as gray cale. cones are sensitive to bright light conditions.arrow_forward
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