2. Structure of Photoreceptors, Rods: All rods contain the pigment that absorbs light and does not distinguish between different wavelengths of light. Rhodopsin is composed of the protein and the pigment Retinal is derived from vitamin In the dark retinal is in a bent configuration called cis-retinal

Anatomy & Physiology
1st Edition
ISBN:9781938168130
Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Chapter14: The Somatic Nervous System
Section: Chapter Questions
Problem 6ILQ: Watch this video (http://openstaxcollege.org/l/l_3-D1) to learn more about how the brain perceives...
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ganglion cells form the
nerve (CN II). Cones are
photoreceptors that function best in bright light for processing high-resolution
color vision while rods are photoreceptors that are sensitive in low-light and
peripheral vision situations. Rods do not detect colors.
2. Structure of Photoreceptors, Rods: All rods contain the pigment
that absorbs light and does not distinguish between
different wavelengths of light. Rhodopsin is composed of the protein
and the pigment
Retinal is derived from
vitamin
In the dark retinal is in a bent configuration called cis-retinal
3. Structure of Photoreceptors, Cones: Cones contain the pigment iodopsin,
which is composed of
and the protein
Photopsin responds to wavelengths perceived as_
or
4. Transduction in Photoreceptors. Transduction of light into an electrical
signal begins when a photon encounters a disc in the outer segment of a rod or
cone. The following events occur once a photon of light reaches a
photoreceptor:
a. How do photoreceptor cells react in the absence of stimulation (in the
dark)?
b. How do photoreceptor cells react in the presence of light?
5. Dark and Light Adaptation allow for adjustments in the amount of light
present in the environment in just a blink of the eye.
6. Image Processing by the Retina in the dark occurs when the photoreceptor
depolarizes and releases glutamate onto bipolar cells. What role does
glutamate play in image processing?
Transcribed Image Text:ganglion cells form the nerve (CN II). Cones are photoreceptors that function best in bright light for processing high-resolution color vision while rods are photoreceptors that are sensitive in low-light and peripheral vision situations. Rods do not detect colors. 2. Structure of Photoreceptors, Rods: All rods contain the pigment that absorbs light and does not distinguish between different wavelengths of light. Rhodopsin is composed of the protein and the pigment Retinal is derived from vitamin In the dark retinal is in a bent configuration called cis-retinal 3. Structure of Photoreceptors, Cones: Cones contain the pigment iodopsin, which is composed of and the protein Photopsin responds to wavelengths perceived as_ or 4. Transduction in Photoreceptors. Transduction of light into an electrical signal begins when a photon encounters a disc in the outer segment of a rod or cone. The following events occur once a photon of light reaches a photoreceptor: a. How do photoreceptor cells react in the absence of stimulation (in the dark)? b. How do photoreceptor cells react in the presence of light? 5. Dark and Light Adaptation allow for adjustments in the amount of light present in the environment in just a blink of the eye. 6. Image Processing by the Retina in the dark occurs when the photoreceptor depolarizes and releases glutamate onto bipolar cells. What role does glutamate play in image processing?
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