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Understanding the Eye
Start Date & Time
Apr 18, 2022, 12:00 AM
4G
😀
1. Rod Cell
2. Photon
3. Rhodopsin
4. Transducin
5. CGMP
6. GMP
7. Phosphodiesterase
8. Na+
9. Na+ Channel
10. Glutamate
78%
Due Date & Time
Apr 24, 2022, 11:59 PM
:
Assessment Description
The human eye may be just an inch in diameter and weigh
only an ounce, but it is one of our main organs of sensation
and contains about 126 million sensory receptors. The
sensory receptor for light is called a photoreceptor, which
uses a second messenger cascade triggered by photons to
signal to our brain that we are seeing something.
The assignment is hand drawn, not an image that is
obtained from the internet. Make sure each drawing is the
size of an entire page. Make the drawings large enough to
clearly display all of the required information.
Directions: Be sure to complete all parts of this assignment.
Part 1: Create a diagram of the rod photoreceptor and
correctly place the following terms on your diagram:
Part 2: Create a diagram that outlines the steps of
phototransduction, starting from a photon of light
hitting rhodopsin and ending with the change in
glutamate release.
Part 3: Questions
X
Once parts 1 and 2 are complete obtain a digital image of14:43
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78%
1. Rod Cell
2. Photon
3. Rhodopsin
4. Transducin
5. CGMP
6. GMP
7. Phosphodiesterase
8. Na+
9. Na+ Channel
10. Glutamate
:
Assessment Description
The human eye may be just an inch in diameter and weigh
only an ounce, but it is one of our main organs of sensation
and contains about 126 million sensory receptors. The
sensory receptor for light is called a photoreceptor, which
uses a second messenger cascade triggered by photons to
signal to our brain that we are seeing something.
X
The assignment is hand drawn, not an image that is
obtained from the internet. Make sure each drawing is the
size of an entire page. Make the drawings large enough to
clearly display all of the required information.
Directions: Be sure to complete all parts of this assignment.
Part 1: Create a diagram of the rod photoreceptor and
correctly place the following terms on your diagram:
Part 2: Create a diagram that outlines the steps of
phototransduction, starting from a photon of light
hitting rhodopsin and ending with the change in
glutamate release.
Part 3: Questions
Once parts 1 and 2 are complete, obtain a digital image of
your drawing and place the image into a Microsoft Word
document. Following the image, complete Part 3 by correctly
answering the questions. You will only submit 1 Word
document.
Using your textbook and drawing as a reference, answer the14:43
S
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4G
😀
78%
:
Part 2: Create a diagram that outlines the steps of
phototransduction, starting from a photon of light
hitting rhodopsin and ending with the change in
glutamate release.
Part 3: Questions
Once parts 1 and 2 are complete, obtain a digital image of
your drawing and place the image into a Microsoft Word
document. Following the image, complete Part 3 by correctly
answering the questions. You will only submit 1 Word
document.
X
Using your textbook and drawing as a reference, answer the
following questions:
1. In the dark, is the sodium channel open or closed?
2. In the dark, is the cell depolarized or hyperpolarized?
3. Give the name and number of the cranial nerve that will
carry the signal to the brain that light has hit the retina.
4. Give the name for the region of the retina that contains
only cones.
5. In a highly stressful situation, which branch of the
autonomic nervous system would cause pupil dilation?
6. Which muscle is responsible for pupillary dilation?
7. In which lobe of the brain does visual processing occur?
8. The term for normal vision is emmetropia. Give the
name for the visual condition that leads to an inability to
see things that are far away and is also known as
nearsighted.
9. If a person is nearsighted is light focusing on a point in
front of the retina or behind?
APA style is not required, but solid academic writing is
expected.
10. This medical condition is primarily caused by increased
pressure in the eye, possibly resulting in nerve damage
and blindness. What is its name?
This assignment uses a rubric. Please review the rubric prior
to beginning the assignment to become familiar with the
expectations for successful completion.
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