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1c the tudors: england, 1485-1603
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Rihana
07/06/2023
Biology
GCSE biology - the eye
The eye anatomy and function is a complex system that enables vision through specialized components working together.
07/06/2023
127
The eye's focusing mechanism involves complex interactions between various structures. For nearby objects, the lens becomes thicker through ciliary muscle contraction, while for distant objects, the lens becomes thinner as suspensory ligaments become taut.
Highlight: Vision disorders can be effectively corrected with appropriate lenses:
Definition: Correcting myopia hyperopia lenses involves using convex lenses for hyperopia and concave lenses for myopia.
Vocabulary: Suspensory ligaments can become either taut or slack, but unlike muscles, they don't contract or relax.
Example: In myopia correction, concave lenses help redirect light rays to focus precisely on the retina rather than in front of it.
The eye's focusing mechanism involves complex interactions between various structures. For nearby objects, the ciliary muscles contract inward, while for distant objects, the suspensory ligaments become taut to thin the lens.
Highlight: When discussing suspensory ligaments, use "slacken" or "become taut" rather than "contract" or "relax" as they are not muscles.
Vision problems can occur when the eye's focusing system doesn't work properly. Correcting myopia and hyperopia requires different approaches:
Definition: Hyperopia (long-sightedness) occurs when the lens is too thin, causing light to refract behind the retina. Convex lenses help correct this condition.
Definition: Myopia (short-sightedness) results from an overly round lens that refracts light too much, creating an image in front of the retina. Concave lenses provide correction.
6
90
11
The Nervous System, Brain and Eyes
Notes from pages 66-71 from CGP AQA 9-1 biology
2
539
10/11
B10 - The Human Nervous System
AQA GCSE Revision notes
13
771
10/11
HOMEOSTASIS AND RESPONSE
NOTES
40
1123
11
2- Cells and control- GCSE Edexcel Biology
2.1- Mitosis 2.2- Growth in animals 2.3- Growth in plants 2.4- Stem Cells 2.5- The Brain 2.6- Brain and spinal chord problems 2.7 - The Nervous System 2.8- The eye 2.9 - Neurotransmission speeds
6
283
10
structure of the eye
coordination > the eye > structure of the eye : includes: labelled + evaluated diagram of the eye
25
1090
10/11
The Eye - GCSE AQA Biology Notes / Higher
GCSE Higher AQA 9-1 Biology Triple science notes
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The eye anatomy and function is a complex system that enables vision through specialized components working together.
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The eye's focusing mechanism involves complex interactions between various structures. For nearby objects, the lens becomes thicker through ciliary muscle contraction, while for distant objects, the lens becomes thinner as suspensory ligaments become taut.
Highlight: Vision disorders can be effectively corrected with appropriate lenses:
Definition: Correcting myopia hyperopia lenses involves using convex lenses for hyperopia and concave lenses for myopia.
Vocabulary: Suspensory ligaments can become either taut or slack, but unlike muscles, they don't contract or relax.
Example: In myopia correction, concave lenses help redirect light rays to focus precisely on the retina rather than in front of it.
Access to all documents
Improve your grades
Join milions of students
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The eye's focusing mechanism involves complex interactions between various structures. For nearby objects, the ciliary muscles contract inward, while for distant objects, the suspensory ligaments become taut to thin the lens.
Highlight: When discussing suspensory ligaments, use "slacken" or "become taut" rather than "contract" or "relax" as they are not muscles.
Vision problems can occur when the eye's focusing system doesn't work properly. Correcting myopia and hyperopia requires different approaches:
Definition: Hyperopia (long-sightedness) occurs when the lens is too thin, causing light to refract behind the retina. Convex lenses help correct this condition.
Definition: Myopia (short-sightedness) results from an overly round lens that refracts light too much, creating an image in front of the retina. Concave lenses provide correction.
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Improve your grades
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By signing up you accept Terms of Service and Privacy Policy
The eye's fundamental components work together to enable vision. The cornea serves as a transparent front layer that reflects light and receives oxygen through diffusion from the air. The retina contains the fovea, a specialized area where light must be reflected for optimal vision.
Vision cells in the eye include cones and rods, which are concentrated in the fovea and retina. These cells serve different purposes - cones enable color vision but struggle in low light, while rods excel in dim conditions but only detect black and white.
Definition: The iris reflex is a protective mechanism that controls pupil size to regulate light entry and protect the retina.
Vocabulary: Accommodation refers to the process where the lens changes shape to focus on objects at different distances.
Example: In low light conditions, the pupil dilates through the relaxation of circular muscles and contraction of radial muscles.
Biology - The Nervous System, Brain and Eyes
Notes from pages 66-71 from CGP AQA 9-1 biology
6
90
0
Biology - B10 - The Human Nervous System
AQA GCSE Revision notes
2
539
0
Biology - HOMEOSTASIS AND RESPONSE
NOTES
13
771
0
Biology - 2- Cells and control- GCSE Edexcel Biology
2.1- Mitosis 2.2- Growth in animals 2.3- Growth in plants 2.4- Stem Cells 2.5- The Brain 2.6- Brain and spinal chord problems 2.7 - The Nervous System 2.8- The eye 2.9 - Neurotransmission speeds
40
1123
0
Biology - structure of the eye
coordination > the eye > structure of the eye : includes: labelled + evaluated diagram of the eye
6
283
1
Biology - The Eye - GCSE AQA Biology Notes / Higher
GCSE Higher AQA 9-1 Biology Triple science notes
25
1090
0
Average app rating
Pupils love Knowunity
In education app charts in 17 countries
Students have uploaded notes
iOS User
Philip, iOS User
Lena, iOS user
