Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 44, Problem 9TY
Summary Introduction
Introduction: The vertebrate eye has retina which contains two types of photoreceptor cells; rods and cones. The retina has the ability to absorb a different wavelength of light which helps in the detection of different colors present in the environment.
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Cone pigments detect different wavelengths of light due toa. their location in the retina.b. the amount of light they absorb.c. the type of retinal they have.d. the type of opsin protein they have.e. interactions with bipolar cells.
The 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.
A 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.
Chapter 44 Solutions
Biology
Ch. 44.1 - Prob. 1CSCh. 44.2 - Prob. 1CCCh. 44.2 - Prob. 1CSCh. 44.2 - Prob. 2CCCh. 44.2 - Prob. 2CSCh. 44.2 - Prob. 3CCCh. 44.4 - Prob. 1CCCh. 44.5 - Prob. 1CSCh. 44.5 - Why is red-green color blindness rare in females?Ch. 44.5 - Prob. 2CS
Ch. 44.5 - Prob. 2CCCh. 44.6 - Prob. 1EQCh. 44.6 - CoreSKILL Of the two hypotheses explaining how...Ch. 44.6 - Prob. 3EQCh. 44.6 - Prob. 1CCCh. 44 - The process in which incoming sensory stimulation...Ch. 44 - Prob. 2TYCh. 44 - ______blanksense pain; ______blank sense heat or...Ch. 44 - Prob. 4TYCh. 44 - In which process(es) are hair cells involved? a....Ch. 44 - Prob. 6TYCh. 44 - In the mammalian eye, light from near or far...Ch. 44 - Prob. 8TYCh. 44 - Prob. 9TYCh. 44 - The stimulation for olfaction involves odorant...Ch. 44 - Prob. 1CQCh. 44 - Prob. 2CQCh. 44 - Prob. 3CQCh. 44 - Discuss the several types of sensory stimuli that...Ch. 44 - Prob. 2COQ
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- 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_forwardWhich of the following statements about photoreceptors is true? A) There are more rod cells in the fovea of the eye, although overall there are more cones in the human eye. B) All of these options C) Photoreceptors are located near the front of the eye, in the cornea. D) There are two types of photoreceptors, rods and cones, that contain different photopigments.arrow_forwardWhen you are stalking your friend's social media via a smartphone.a. In your opinion, which receptor organs and cells function to process light stimuli so that they can be transmitted to neurons to become an electrical signal. Explain your answer!b. Describe in detail how the light transduction process pathway to the eye, so that it can see an information from your smartphone!arrow_forward
- The 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_forwardWhy is it easier to see images at night using peripheral, rather than the central, vision? a. Cones are denser in the periphery of the retina. b. Bipolar cells are denser in the periphery of the retina. c. Rods are denser in the periphery of the retina. d. The optic nerve exits at the periphery of the retina.arrow_forwardWhich 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 cellarrow_forward
- Which of these photoreceptor cells do not match their function? a) rods - night vision b) stavar - sharp-sighted c) drops - color vision d) No answer text provided.arrow_forwardAt night, which type(s) of photopigment enable(s) you to discriminate the colors of neon signs and traffic lights? A. Rhodopsin B. Cone visual pigments C. Melanopsin D. Two of the abovearrow_forwardExplain the process of phototransduction and signal transmission in the retina. Be sure to include the steps associated with the formation/breakdown of Rhodopsin as well as the signal transduction process that takes place in the retina beginning in the dark. Be sure to also include where in the retina these process are taking place (i.e rods, bipolar cells or ganglion cells, outer segment, inner segment…).arrow_forward
- The is the region of the eye that controls the amount of light that enters.a. cornea b. pupil c. lensd. fovea e. retinaarrow_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_forwardWe have three types of cones in the retina. Explain how we can see a large range of colors with only three types of cones:arrow_forward
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