Title: .Biology Semester 2 / Eye
Tags: eye

Original: Aqueous humour
Structure
• [[oc1::Clear watery fluid]]
• Found in [[oc2::anterior segment
]]
Function
• [[oc3::Maintains pressure]]
• [[oc4::Provides glucose and oxygen to the cornea and lens]]
Q: Aqueous humour
Structure
• [...]
• ...
Function
• ...
• ...
A: Clear watery fluid
Q: Aqueous humour
Structure
• Clear watery fluid
• [...]
Function
• ...
• ...
A: Found in anterior segment
Q: Aqueous humour
Structure
• ...
•
Found in anterior segment
Function
• [...]
• ...
A: Maintains pressure
Q: Aqueous humour
Structure
• ...
• ...
Function
• Maintains pressure
• [...]
A: Provides glucose and oxygen to the cornea and lens
Aqueous humour
Structure
• Clear watery fluid
• 
Found in anterior segment

Function
• Maintains pressure
• Provides glucose and oxygen to the cornea and lens
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Original: Vitreous Humour
Structure
• [[oc4::Clear jelly-like fluid]]
• Found in [[oc1::posterior segment]]
Function
• Nourishes [[oc2::interior of eye]]
• [[oc3::Exerts pressure maintaining eye shape]]
Q: Vitreous Humour
Structure
• ...
• Found in [...]
Function
• Nourishes ...
• ...
A: posterior segment
Q: Vitreous Humour
Structure
• ...
• Found in posterior segment
Function
• Nourishes [...]
• ...
A: interior of eye
Q: Vitreous Humour
Structure
• ...
• Found in ...
Function
• Nourishes interior of eye
• [...]
A: Exerts pressure maintaining eye shape
Q: Vitreous Humour
Structure
• [...]
• Found in ...
Function
• Nourishes ...
• Exerts pressure maintaining eye shape
A: Clear jelly-like fluid
Vitreous Humour
Structure
• Clear jelly-like fluid
• Found in posterior segment
Function
• Nourishes interior of eye
• Exerts pressure maintaining eye shape
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Original: Blind Spot
Also known as [[oc1::optic disc]]
• Small area of the [[oc2::retina]] where [[oc3::optic nerve joins the eye]]
• Any light on this area will [[oc4::not be seen]]
Q: Blind Spot
Also known as [...]
• Small area of the ... where ...
• Any light on this area will ...
A: optic disc
Q: Blind Spot
Also known as optic disc
• Small area of the [...] where ...
• Any light on this area will ...
A: retina
Q: Blind Spot
Also known as ...
• Small area of the retina where [...]
• Any light on this area will ...
A: optic nerve joins the eye
Q: Blind Spot
Also known as ...
• Small area of the ... where optic nerve joins the eye
• Any light on this area will [...]
A: not be seen
Blind Spot
Also known as optic disc
• Small area of the retina where optic nerve joins the eye
• Any light on this area will not be seen
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Original: Cornea
Structure:
• [[oc1::Transparant tissue]] covering [[oc2::the front of the eye]]
• No [[oc3::Blood vessels]] but many [[oc4::nociceptors]]
Q: Cornea
Structure:
• [...] covering ...
• No ... but many ...
A: Transparant tissue
Q: Cornea
Structure:
• Transparant tissue covering [...]
• No ... but many ...
A: the front of the eye
Q: Cornea
Structure:
• ... covering the front of the eye
• No [...] but many ...
A: Blood vessels
Q: Cornea
Structure:
• ... covering ...
• No Blood vessels but many [...]
A: nociceptors
Cornea
Structure:
• Transparant tissue covering the front of the eye
• No Blood vessels but many nociceptors
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Original: Fovea
• Most [[oc1::sensitive]] part of the retina = [[oc2::Sharpest vision]]
Q: Fovea
• Most [...] part of the retina = ...
A: sensitive
Q: Fovea
• Most sensitive part of the retina = [...]
A: Sharpest vision
Q: Fovea
• Most [...] part of the retina = [...]
A: sensitive; Sharpest vision
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Original: Iris
[[oc1::Circular band of muscles]] that controls the [[oc2::size of the pupil]]
Q: Iris
[...] that controls the ...
A: Circular band of muscles
Q: Iris
Circular band of muscles that controls the [...]
A: size of the pupil
Q: Iris
[...] that controls the [...]
A: Circular band of muscles; size of the pupil
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Original: Lens
• Made of [[oc1::stacks of long narrow transparant cells]] called lens fibres
• [[oc2::Biconvex]] in shape
Q: Lens
• Made of [...] called lens fibres
• ... in shape
A: stacks of long narrow transparant cells
Q: Lens
• Made of stacks of long narrow transparant cells called lens fibres
• [...] in shape
A: Biconvex
Q: Lens
• Made of [...] called lens fibres
• [...] in shape
A: stacks of long narrow transparant cells; Biconvex
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Original: Choroid
• [[oc2::Vascular layer]] between [[oc1::retina and sclera]]
• Contains [[oc3::melanin to absorb light]]
Q: Choroid
• ... between [...]
• Contains ...
A: retina and sclera
Q: Choroid
• [...] between retina and sclera
• Contains ...
A: Vascular layer
Q: Choroid
• Vascular layer between ...
• Contains [...]
A: melanin to absorb light
Q: Choroid
• [...] between [...]
• Contains [...]
A: Vascular layer; retina and sclera; melanin to absorb light
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Original: Sclera
• [[oc4::White]] outer layer
• Tough, [[oc3::made of connective tissue]]
• Maintians [[oc1::eye shape]] and resists [[oc2::pressure of vitreous humour]]
Q: Sclera
• ... outer layer
• Tough, ...
• Maintians [...] and resists ...
A: eye shape
Q: Sclera
• ... outer layer
• Tough, ...
• Maintians eye shape and resists [...]
A: pressure of vitreous humour
Q: Sclera
• ... outer layer
• Tough, [...]
• Maintians ... and resists pressure of vitreous humour
A: made of connective tissue
Q: Sclera
• [...] outer layer
• Tough, made of connective tissue
• Maintians ... and resists ...
A: White
Sclera
• White outer layer
• Tough, made of connective tissue
• Maintians eye shape and resists pressure of vitreous humour
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Original: Why is the amount of light entering the eye important?
• Too much light = [[oc1::overstimulation of photoreceptors]]
• Too little = [[oc2::not enough stimulation ]]
Q: Why is the amount of light entering the eye important?
• Too much light = [...]
• Too little = ...
A: overstimulation of photoreceptors
Q: Why is the amount of light entering the eye important?
• Too much light = overstimulation of photoreceptors
• Too little = [...]
A: not enough stimulation
Q: Why is the amount of light entering the eye important?
• Too much light = [...]
• Too little = [...]
A: overstimulation of photoreceptors; not enough stimulation
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Original: Bright light >>
[[oc1::More photoreceptors stimulated]] >>
[[oc2::Send more impulses via sensory neurones to the brain]] >>
[[oc3::Autonomic nervous system sends impulses to the iris via parasympathetic nerves]] >>
[[oc4::In iris: circular muscle contracts, radial muscle relaxes]] >>
[[oc5::Pupil constricts]] >>
[[oc6::Less light enters the eye]]
Q: Bright light >>
[...] >>
... >>
... >>
... >>
... >>
...
A: Photoreceptors stimulated
Q: Bright light >>
Photoreceptors stimulated >>
[...] >>
... >>
... >>
... >>
...
A: Send impulses via sensory neurones to the brain
Q: Bright light >>
... >>
Send impulses via sensory neurones to the brain >>
[...] >>
... >>
... >>
...
A: Autonomic nervous system sends impulses to the iris via parasympathetic nerves
Q: Bright light >>
... >>
... >>
Autonomic nervous system sends impulses to the iris via parasympathetic nerves >>
[...] >>
... >>
...
A: In iris: circular muscle contracts, radial muscle relaxes
Q: Bright light >>
... >>
... >>
... >>
In iris: circular muscle contracts, radial muscle relaxes >>
[...] >>
...
A: Pupil becomes smaller
Q: Bright light >>
... >>
... >>
... >>
... >>
Pupil becomes smaller >>
[...]
A: Less light enters the eye
Bright light >>
Photoreceptors stimulated >>
Send impulses via sensory neurones to the brain >>
Autonomic nervous system sends impulses to the iris via parasympathetic nerves >>
In iris: circular muscle contracts, radial muscle relaxes >>
Pupil becomes smaller >>
Less light enters the eye
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Original: Dim light >>
[[oc1::Fewer photoreceptors in retina stimulated]] >>
[[oc2::Send fewer impulses via sensory neurones to the brain]] >>
[[oc3::Autonomic nervous system sends impulses to iris via sympathetic nerves]] >>
[[oc4::Iris: circular muscle relaxes, radial muscle contracts]] >>
[[oc5::Pupil dilates]] >>
[[oc6::More light enters the eye]]
Q: Dim light >>
[...] >>
... >>
... >>
... >>
... >>
...
A: Photoreceptors in retina stimulated
Q: Dim light >>
Photoreceptors in retina stimulated >>
[...] >>
... >>
... >>
... >>
...
A: Send impulses via sensory neurones to the brain
Q: Dim light >>
... >>
Send impulses via sensory neurones to the brain >>
[...] >>
... >>
... >>
...
A: Autonomic nervous system sends impulses to iris via sympathetic nerves
Q: Dim light >>
... >>
... >>
Autonomic nervous system sends impulses to iris via sympathetic nerves >>
[...] >>
... >>
...
A: Iris: circular muscle relaxes, radial muscle contracts
Q: Dim light >>
... >>
... >>
... >>
Iris: circular muscle relaxes, radial muscle contracts >>
[...] >>
...
A: Pupil becomes larger
Q: Dim light >>
... >>
... >>
... >>
... >>
Pupil becomes larger >>
[...]
A: More light enters the eye
Dim light >>
Photoreceptors in retina stimulated >>
Send impulses via sensory neurones to the brain >>
Autonomic nervous system sends impulses to iris via sympathetic nerves >>
Iris: circular muscle relaxes, radial muscle contracts >>
Pupil becomes larger >>
More light enters the eye
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Original: Shape of ciliary muscle is [[oc1::circular]], the lens is naturally [[oc2::short and fat]] and it is also [[oc3::elastic]]
The changing of lens shape for the focusing of light is called [[oc4::accommodation]]
Distant light rays are [[oc5::parallel]]
Close light rays are [[oc6::converging]]
Q: Shape of ciliary muscle is [...], the lens is naturally ... and it is also ...
The changing of lens shape for the focusing of light is called ...
Distant light rays are ...
Close light rays are ...
A: circular
Q: Shape of ciliary muscle is circular, the lens is naturally [...] and it is also ...
The changing of lens shape for the focusing of light is called ...
Distant light rays are ...
Close light rays are ...
A: short and fat
Q: Shape of ciliary muscle is ..., the lens is naturally short and fat and it is also [...]
The changing of lens shape for the focusing of light is called ...
Distant light rays are ...
Close light rays are ...
A: elastic
Q: Shape of ciliary muscle is ..., the lens is naturally ... and it is also elastic
The changing of lens shape for the focusing of light is called [...]
Distant light rays are ...
Close light rays are ...
A: accommodation
Q: Shape of ciliary muscle is ..., the lens is naturally ... and it is also ...
The changing of lens shape for the focusing of light is called accommodation
Distant light rays are [...]
Close light rays are ...
A: parallel
Q: Shape of ciliary muscle is ..., the lens is naturally ... and it is also ...
The changing of lens shape for the focusing of light is called ...
Distant light rays are parallel
Close light rays are [...]
A: converging
Shape of ciliary muscle is circular, the lens is naturally short and fat and it is also elastic
The changing of lens shape for the focusing of light is called accommodation
Distant light rays are parallel
Close light rays are converging
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