20698013
Description
Mind Map by Emily Gill, updated more than 1 year ago
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Created by Emily Gill
about 4 years ago
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The Eye
- Parts Of The Eye And What
Each Part Does.
- Iris
- Contains muslces that allow it to control
the diameter of the Pupil and therefore
how much light enters the eye.
- Contains muslces that allow it to control
the diameter of the Pupil and therefore
how much light enters the eye.
- Sclera
- Though supporting wall of
the Eye.
- Though supporting wall of
the Eye.
- Cornea
- Transpartent outer layer found at the front of
the Eye. It refracts and bends the light into
the Eye.
- Transpartent outer layer found at the front of
the Eye. It refracts and bends the light into
the Eye.
- Lens
- Focuses the light onto the
Retina (which contains
receptors which are sensitive to
light intensity and colour).
- Focuses the light onto the
Retina (which contains
receptors which are sensitive to
light intensity and colour).
- Optic Nerve
- Carries impulses from
receptors on the Retina to
the Brain
- Carries impulses from
receptors on the Retina to
the Brain
- Ciliary Muscles
- Circular ring of muscle that
surrounds the Lens adjusting
the diameter of the Lens.
- Circular ring of muscle that
surrounds the Lens adjusting
the diameter of the Lens.
- Suspensory
Ligaments
- Connects the Cilary Body
with the Lens keeping it in
place.
- Connects the Cilary Body
with the Lens keeping it in
place.
- Pupil
- The black hole in the centre of
the Eye.
- The black hole in the centre of
the Eye.
- Retina
- Contains 2 main types of light receptors
which can produce colour vision.
- Contains 2 main types of light receptors
which can produce colour vision.
- Iris
- The Iris Reflex
- For a bright light it gets detected by the eye and
that triggers a relfex which makes the pupil
smaller. The Cirluary Muscles in the Iris contract
and the Radial Muscles Relax reducing the
amount fo light entering the Eye.
- The opposite to the bright light occurs
for a dim light but instead the Radial
Muslces contract and the Circular
Muscles relax making the Pupil wider.
- For a bright light it gets detected by the eye and
that triggers a relfex which makes the pupil
smaller. The Cirluary Muscles in the Iris contract
and the Radial Muscles Relax reducing the
amount fo light entering the Eye.
- Focusing on Near and Far
objects
- Near objects
- The Ciliary Muscles contract which
slackens the Suspensory Ligaments. This
makes the Lens go fatter increasing the
amount of refracted light.
- The Ciliary Muscles contract which
slackens the Suspensory Ligaments. This
makes the Lens go fatter increasing the
amount of refracted light.
- Far objects
- The Ciliary Muscles relax which allows the
Suspensory Ligaments to pull tight. This
makes the Lens go thinner making it refract
light by a smaller amount.
- The Ciliary Muscles relax which allows the
Suspensory Ligaments to pull tight. This
makes the Lens go thinner making it refract
light by a smaller amount.
- Near objects
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