Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 11CYR
Each of the following statements is false. Correct each statement to make it true.
a. Photons are absorbed by rhodopsin in retinal ganglion cells.
b. Rods and cones are found in the fovea centralis.
c. In the dark, rods and cones produce action potentials.
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Students have asked these similar questions
Which of the following statements about the contributions of rods and cones to vision is TRUE?
A.
The three types of cones (long, medium, short) are represented at roughly equal numbers
B.
Rods respond to light at ultra-violet wavelengths (>600nm)
C.
The relative density of cones is roughly even throughout the retina
D.
The greater sensitivity of rods in low light is explained by their larger number
E.
Several rods converge on a single bipolar cell
You 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).
As we progress from bipolar cells to ganglion cells to later cells in the visual system, what happens to the size of receptive fields? a. They become larger. b. They become smaller. c. They stay the same size. d. They vary in size unpredictably.
Chapter 15 Solutions
Human Anatomy & Physiology (2nd Edition)
Ch. 15.1 - What are the three major differences between the...Ch. 15.1 - What is sensory transduction?Ch. 15.2 - 1. Where is the olfactory epithelium located?
Ch. 15.2 - 2. What types of cells make up the olfactory...Ch. 15.2 - Describe the structure of an olfactory neuron.Ch. 15.2 - What happens in an olfactory neuron when an...Ch. 15.2 - How can humans detect such a variety of odors with...Ch. 15.2 - Prob. 6QCCh. 15.3 - Where are taste buds located?Ch. 15.3 - Prob. 2QC
Ch. 15.3 - Prob. 3QCCh. 15.3 - Prob. 4QCCh. 15.3 - How does a gustatory cell transduce a chemical...Ch. 15.3 - 6. Which cranial nerves transmit taste sensation...Ch. 15.3 - 7. Which part of the brain is responsible for...Ch. 15.4 - What are the functions of the tarsal glands and...Ch. 15.4 - Trace the path of tears as they travel from the...Ch. 15.4 - 3. Which two extrinsic eye muscles move the eye...Ch. 15.4 - Prob. 4QCCh. 15.4 - 5. What are the functions of each component of...Ch. 15.4 - 6. What are the two fluids found in the eyeball?...Ch. 15.5 - Prob. 1QCCh. 15.5 - Prob. 2QCCh. 15.5 - What is accommodation?Ch. 15.5 - Prob. 4QCCh. 15.5 - 5. What is the near point of accommodation, and...Ch. 15.5 - 6. How do myopia and hyperopia differ?
Ch. 15.5 - How are rods different from cones?Ch. 15.5 - Why are photoreceptors depolarized in the dark?Ch. 15.5 - How do rods hyperpolarize when light strikes them?...Ch. 15.5 - 10. What happens at the optic chiasma? What is...Ch. 15.5 - 11. What type of visual processing occurs in the...Ch. 15.6 - 1. What is the auricle?
Ch. 15.6 - What is the purpose of cerumen?Ch. 15.6 - 3. Where is the tympanic membrane located?
Ch. 15.6 - Prob. 4QCCh. 15.6 - What is the role of the pharyngotympanic tube?Ch. 15.6 - What are the functions of the utricle, saccule,...Ch. 15.6 - How are the scala tympani, scala media, and scala...Ch. 15.6 - 8. What is the spiral organ, and where is it...Ch. 15.7 - 1. What physical properties determine the pitch...Ch. 15.7 - 2. What is the range (in hertz) of human...Ch. 15.7 - 3. Why is the force exerted on the oval window...Ch. 15.7 - Prob. 4QCCh. 15.7 - Prob. 5QCCh. 15.7 - Prob. 6QCCh. 15.7 - Prob. 7QCCh. 15.7 - Prob. 8QCCh. 15.8 - How do static and dynamic equilibrium differ?Ch. 15.8 - 2. What role do the utricle and saccule play in...Ch. 15.8 - What role do they play in dynamic equilibrium?Ch. 15.8 - Prob. 4QCCh. 15.8 - 5. What are the three primary areas of the...Ch. 15 - Match the cell type with the correct stimulus....Ch. 15 - 2. The axons of the olfactory nerve terminate in...Ch. 15 - 3. Fill in the blanks: In an olfactory neuron, the...Ch. 15 - The primary olfactory cortex is located in the: a....Ch. 15 - 5. Which of the following statements is true...Ch. 15 - Match the taste with the chemical substance that...Ch. 15 - Prob. 7CYRCh. 15 - Prob. 8CYRCh. 15 - 9. Which cells in the retina are depolarized in...Ch. 15 - Prob. 10CYRCh. 15 - Each of the following statements is false. Correct...Ch. 15 - The axons from the nasal retina in the left eye...Ch. 15 - Mark the following statements as true or false. If...Ch. 15 - Explain how sounds of different frequencies are...Ch. 15 - Prob. 15CYRCh. 15 - Prob. 16CYRCh. 15 - Prob. 17CYRCh. 15 - 18. True or false: Hair cells in the spiral organ...Ch. 15 - 19. Which of the following is not part of the...Ch. 15 - 20. Fill in the blanks: In the ampulla of a...Ch. 15 - Stimuli from the inner ear regarding head movement...Ch. 15 - 1. Explain what would happen to your sense of...Ch. 15 - In which direction would you be unable to move...Ch. 15 - If a patient suffers visual impairment only in one...Ch. 15 - 4. Following a stroke, a patient lost vision in...Ch. 15 - Why do you have the sensation that you are still...Ch. 15 - 1. Mr. Spencer suffers loss of taste sensation....Ch. 15 - 2. Your friend tells you that she has just been...Ch. 15 - Prob. 3AYKACh. 15 - Prob. 4AYKACh. 15 - Mrs. Flores is a 45-year-old female who suffered a...Ch. 15 - 6. Your 60-year-old patient, Mr. Guster, has...
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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
- 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_forwardMatch each of the following terms with the appropriate description. _____ somatic senses (general senses)a.produced by strong stimulation _____ special sensesb.endings of sensory neurons or specialized cells next to them _____ variations in stimulus intensity _____ action potentialc.taste, smell, hearing, balance, and vision _____ sensory receptord.frequency and number of action potentials e.touch, pressure, temperature, pain, and muscle sensearrow_forwardThe transduction process of converting light into neural signals sent to the central nervous system involves which of these steps? A. Bipolar Cells collect signals from Rods and Cones. B. The Optic Nerve carries signals about light from the Lateral Geniculate Nuclues to the Retinal Ganglion Cells. C. Retinal Ganglion Cells relay information to Rods and Cones. D. Light that reaches the eyes passes first through the Retina which focuses that light onto the Cornea.arrow_forward
- Which of the following is accurate about the maculae of the vestibular apparatus? a. They detect rotational movements of the head. b. They are located in the semicircular canal. c. Nerve signals are generated when the otolithic membrane bends the stereocilia of the hair cells. d. They are the organs of hearing.arrow_forwardReceptor cells that are neurons with sensory dendrites are faster than receptor cells that are separate from neurons. Why is that, and why might that be important in, for example, the sense of touch versus vision?arrow_forwardA bar of light in a specific part of the retina, with a particular length and orientation, is the most effective stimulus for a.retinal ganglion cells. b.lateral geniculate cells. c.simple cortical cells. d.complex cortical cells.arrow_forward
- Why is a retinal defect, such as retinitis pigmentosa, which causes tunnel vision, associated with night blindness? a. Tunnel vision and night blindness are unrelated conditions. b. The high density of rod photoreceptors in the fovea are unaffected in each condition. c. The highest resolution cone photoreceptors are found exclusively in the outer regions of the retina. d. The color-detecting cone photoreceptors have the greatest density in the outer regions of the retina. e. The highly-sensitive rod photoreceptors are located in the outer regions of the retina.arrow_forwardBecause fibers of the optic nerve that originate in the nasal halves of each retina cross over at the optic chiasma, each lateral geniculate receives input from a.both the right and left sides of the visual field of both eyes. b.the ipsilateral visual field of both eyes. c.the contralateral visual field of both eyes. d.the ipsilateral field of one eye and the contralateral field of the other eye.arrow_forwardThe retina.____ are the only light sensitive cells used for vision and the________ are the only output cells to the brain in the A. rod and cone photoreceptors ganglion cells B. rod photoreceptors; bipolar cells C. cone photoreceptors; ganglion cells D. rod and cone photoreceptors; bipolar cells E. rod photoreceptors; horizontal cells ___ are the only output cells to the brain in thearrow_forward
- If a person is born blind, what happens to the occipital (“visual”) cortex?A. Its cells shrink and gradually die.B. Its cells remain intact but forever inactive.C. Its cells become responsive to touch or hearing.D. Its cells become spontaneously active, producing hallucinations.arrow_forwardThe order in which the cells in the eye process light is __________. A) photoreceptors; ganglion cells; bipolar cells B) ganglion cells; bipolar cells; photoreceptors C) photoreceptors; bipolar cells; ganglion cells D) bipolar cells; photoreceptors; ganglion cellsarrow_forwardBlindsight is the condition in which someone with damage in the primary visual cortex reports that they cannot see an object, but can usually guess what that object is. This means that some visual representation must reach the frontal speech area. What non-thalamic pathway might do that? Question 8 options: A) The pathway through the suprachiasmatic nucleus B) The dorsal visual pathway C) The pathway through the superior colliculus D) The magnocelluar or M pathwayarrow_forward
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