Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 38SAQ
Since there are only three types of cones, how can you explain the fact that we see many more colors?
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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.
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Chapter 13 Solutions
Anatomy & Physiology (6th Edition)
Ch. 13.1 - What are the three levels of sensory integration?Ch. 13.1 - Prob. 2CYUCh. 13.1 - Your cortex decodes incoming action potentials...Ch. 13.2 - Your PNS mostly consists of nerves. What else...Ch. 13.2 - Youve cut your finger on a broken beaker in your...Ch. 13.4 - What are tears and what structure secretes them?Ch. 13.4 - Prob. 5CYUCh. 13.4 - Arrange the following in the order that light...Ch. 13.4 - You have been reading this book text for a while...Ch. 13.4 - Prob. 8CYU
Ch. 13.4 - For each of the following, indicate whether it...Ch. 13.4 - Which part of the visual field would be affected...Ch. 13.4 - Prob. 13CYUCh. 13.4 - Name the five taste modalities. Name the three...Ch. 13.5 - Apart from the bony boundaries, which structure...Ch. 13.5 - Which structure inside the spiral organ allows us...Ch. 13.5 - Prob. 17CYUCh. 13.5 - If the brain stem did not receive input from both...Ch. 13.5 - Prob. 19CYUCh. 13.6 - Prob. 20CYUCh. 13.6 - What is in a nerve besides axons?Ch. 13.6 - Wills femoral nerve was crushed while clinicians...Ch. 13.7 - Name the cranial nerve(s) most involved in each of...Ch. 13.8 - Prob. 24CYUCh. 13.8 - After his horse-riding accident, the actor...Ch. 13.9 - What are varicosities and where would you find...Ch. 13.10 - Which parts of the nervous system ultimately plan...Ch. 13.11 - Prob. 28CYUCh. 13.11 - Prob. 29CYUCh. 13.11 - Prob. 30CYUCh. 13.11 - Prob. 31CYUCh. 13 - The large onion-shaped receptors that are found...Ch. 13 - Proprioceptors include all of the following except...Ch. 13 - Prob. 3MCCh. 13 - Prob. 5MCCh. 13 - For each of the following muscles or body regions,...Ch. 13 - Prob. 33MCCh. 13 - Prob. 4MCCh. 13 - Match the names of the cranial nerves in column B...Ch. 13 - Prob. 8MCCh. 13 - The portion of the fibrous layer that is white and...Ch. 13 - Which sequence best describes a normal route for...Ch. 13 - Prob. 11MCCh. 13 - Damage to the medial recti muscles would probably...Ch. 13 - The phenomenon of dark adaptation is best...Ch. 13 - Blockage of the scleral venous sinus might result...Ch. 13 - Nearsightedness is more properly called a. myopia,...Ch. 13 - Of the neurons in the retina, the axons of which...Ch. 13 - Which reactions occur when a person looks at a...Ch. 13 - The blind spot of the eye is a. where more rods...Ch. 13 - Olfactory tract damage would probably affect your...Ch. 13 - Sensory impulses transmitted over the facial,...Ch. 13 - Taste buds are found on the a. anterior part of...Ch. 13 - Gustatory epithelial cells are stimulated by a....Ch. 13 - Olfactory nerve filaments are found a. in the...Ch. 13 - Conduction of sound from the middle ear to the...Ch. 13 - Which of the following statements does not...Ch. 13 - Pitch is to frequency of sound as loudness is to...Ch. 13 - The structure that allows pressure in the middle...Ch. 13 - Which of the following is important in maintaining...Ch. 13 - Equilibrium receptors that report the position of...Ch. 13 - Which of the following is not a possible cause of...Ch. 13 - Which of the following are intrinsic eye muscles?...Ch. 13 - Prob. 32MCCh. 13 - List the structural components of the peripheral...Ch. 13 - Prob. 47SAQCh. 13 - Central pattern generators (CPGs) are found at the...Ch. 13 - Prob. 48SAQCh. 13 - Explain how a crossed-extensor reflex exemplifies...Ch. 13 - What clinical information can be gained by...Ch. 13 - Prob. 46SAQCh. 13 - How do rods and cones differ functionally?Ch. 13 - Where is the fovea centralis, and why is it...Ch. 13 - Prob. 37SAQCh. 13 - Since there are only three types of cones, how can...Ch. 13 - Where are the olfactory sensory neurons, and why...Ch. 13 - (a) Define plexus. (b) Indicate the spinal roots...Ch. 13 - What is the homeostatic value of flexor reflexes?Ch. 13 - Prob. 43SAQCh. 13 - Prob. 1CCSCh. 13 - Prob. 2CCSCh. 13 - Prob. 3CCSCh. 13 - Prob. 1CCSSCh. 13 - Prob. 2CCSSCh. 13 - Prob. 3CCSSCh. 13 - Prob. 4CCSSCh. 13 - Prob. 5CCSS
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which statement about the events of photoreception is false? a) as a rod cell hyperpolarizes, its release of neurotransmitter increases b) there is more Na+ entry into a rod cell in the dark than in the light c) bipolar cells release more neurotransmitter in the light than in the dark d) as a bipolar cell depolarizes, its release of neurotransmitter increases e) when a rod cell releases neurotransmitter the bipolar cell it synapses with hyperpolarizesarrow_forwardColor vision is trichromatic in that 3 primary colors can mix and match all other colors. However, there are 4 unique colors or hues that come in opponent pairs. Name and describe what retinal elements or structures produce trichromacy, compared to what retinal elements or structures produce unique color signals and opponent color pairs?arrow_forwardIn order to see a dim star at night, it is better not to look directly at it. If you see it from the “corner of your eye” and then turn to look at it, it may disappear. Explain how this occurs. Also, you can staredirectly at an object in daylight and continue seeing it, despite the bleaching of photoreceptors. Explain how this is possible.arrow_forward
- Why is it difficult to see colors in dim light?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_forwardWhen a person blinks, the part of the brain that interprets visual stimulation is suppressed. The spontaneous act of blinking is controlled by the area of the brain that controls involuntary movements such as breathing and blood pressure. To determine whether the lack of light or the act of blinking causes the suppression, scientists had subjects close their eyes and then placed a bright flashing light in their mouth to stimulate the photoreceptors in the eyes through the palate. Visual stimulation was still suppressed. So the photoreceptors in the retina were not stimulated even though they were exposed to light. This study demonstrated that when a person blinks, it is the act of blinking and not the absence of light that causes the suppression of visual stimulation. In the diagram above, identify the part of the brain that is suppressed during blinking and the part of the brain that controls involuntary, spontaneous blinking. Select one: a. 3 and 8 b. 2 and 9 c. 5 and 6 d. 1 and…arrow_forward
- 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_forwardClaude 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_forwardWhen 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 stimulatedarrow_forward
- Why do rods provide greater visual sensitivity while cones provide better acuity?arrow_forwardYou discover that the convergence ratio for the photoreceptors in the Zerons is opposite to that of humans, i.e the convergence ratio for rods is lower and the convergence ratio of cones is higher. The site and distribution of the photoreceptors is the same as in humans. Question: What might be true for Zerons vision? The images formed in the dark are sharper than those formed in light The central parts of their visual field aren't as sharp as the peripheral parts of their visual fields. They are better at forming color contrasts in images They have poor differentiation between black and whitearrow_forwardcan you explain to me what does the numerator and denominator mean in the visual acuity chart?arrow_forward
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