anatomy: eye and ear - sums.ac.irhome.sums.ac.ir/.../10/ana-eye-ear-drmoradian2013.pdf · the eye...
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In the name of God
Anatomy:
Eye and Ear
Moradian MD, MPH, PhD Candidate
Tehran University of Medical Sciences
2013
http://www.kidsh
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faculty.augie.edu/
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External Anatomy of the Eye
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نماي چشمنماي ظاىري چشم يا قسمتي از چشمم ممو س م ديگران قابو ريت ا ت، شمالو مو قسممت لمي
.باشذپشش خارجي فيذ فت مره چشم ممو : صلبيو
بو شنو دادن چشم بو صرت ممري مممل لمي منذ از اختمان حساش داخو چشمم لااظتمت
.لي منذنقطو اي ياه در لرممس چشمم ممو با م : لردلل
. بر نر بو داخو چشم لي شدقسمت رنگمي چشمم ا مت بمو بمو رنگيماي : نبيو
... اي، سمملي لختلممم لاننممذ بممي، ممبس، قيممه مو اصلي نبيو بنتره انمذازه لردلم . باشذ لي
انذازه نري مو بو مره چشم ارد لي شد بده. رامنتره لي منذ
شفاظي ممو صملبيو چشمم را غشاء نازك : للتامولي پشانذ رگ ىاي خني مو در قسمت صلبيو
http://www.sums.ac.ir/~moradij/wp.ديذه لي شد از ليان للتامو بيرن لي يذ
Lacrimal Apparatus of the Eye
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The Eye
Extraocular Muscles
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Anatomy of the Eyeball
Fibrous Tunic: ليفي Cornea ( پوشيده شده توسط ملتحمه–بدون رگ )قرنيه
Sclera صليبه
Vascular Tunic عروقي Choroid coat مشيميه
Ciliary Body (Ciliary muscle, Ciliary process) جسم مژگانی
Iris عنبيه
Nervous Tunic عصبي
Retina
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Accessory structures of the Eye
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Internal Anatomy of the Eye
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anterior anatomy of the eye
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Sclera
The white part of the eyeball is called
the sclera (say: sklair-uh). The sclera
is made of a tough material and has
the important job of covering most of
the eyeball. Think of the sclera as
your eyeball's outer coat.
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CORNEA
The part of the sclera in front of the colored part of
the eye is called the cornea (say: kor-nee-uh).
Unlike the rest of the sclera, which is white, the
cornea is transparent, or completely clear, which
lets light travel through it. The cornea helps the
eye focus as light makes its way through. It is a
very important part of the eye, but you can hardly
see it because it's made of clear tissue. Like clear
glass, the cornea gives your eye a clear window to
view the world through
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IRISBehind the cornea are
the iris and the pupil.
The iris (say: eye-riss)
is the colorful part of the
eye. When we say a
person has blue eyes,
we really mean the
person has blue irises!
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PUPIL
The iris is a muscle. This allows the
iris to control how much light goes
through the pupil (say: pyoo-pul).
The pupil is the black circle in the
center of the iris, and it lets light enter
the eye. The pupils will get smaller
when a light shines near them and
they'll open wider when the light is
gone.http://www.sums.ac.ir/~moradij/wp
Between the iris and
cornea is the anterior
(say: an-teer-ee-ur)
chamber. This chamber is
filled with a special
transparent fluid that gives
the eye oxygen, protein,
and glucose (a type of
sugar in the body) to keep
it healthy.
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TEARS
Our tears form a
protective layer at the
front of the eye and
also help to direct the
light coming into our
eye.
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Lens
After light enters the
pupil, it hits the lens.
The lens sits behind
the iris and is clear
and colorless. The
lens' job is to focus
light rays on the back
of the eyeball - a part
called the retina (say:
reh-tin-uh).http://www.sums.ac.ir/~moradij/wp
The lens is
transparent with
spherical surfaces.
It is convex which
means thicker in the
center.
Lens
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The lens is suspended in the eye by a
bunch of fibers. These fibers are
attached to a muscle called the ciliary
(say: sih-lee-air-ee) muscle. The ciliary
muscle has the amazing job of changing
the shape of the lens. That's right - the
lens actually changes shape right inside
your eye!
Lens
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Retina
Your retina is in the very back of the
eye, past the vitreous body. Though it's
smaller than a dime, it holds millions of
cells that are sensitive to light. The
retina takes the light the eye receives
and changes it into nerve signals so the
brain can understand what the eye is
seeing.
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VITREOUS BODY زجاجيه /جسم شيشه اي
The biggest part of the eye sits behind the
lens and is called the vitreous (say: vih-
tree-us) body. The vitreous body forms two
thirds of the eye's volume and gives the eye
its shape. It's filled with a clear, jelly-like
material called the vitreous humor.
In a real eye, after light passes through the
lens, it shines straight through the vitreous
humor to the back of the eye.
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Ear
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حاوی آندولنف: البیرینت غشایی
پری لنف: البیرینت استخوانی
Cochlea
The cochlea
resembles a snail shell
and spirals for about 2
3/4 turns around a
bony column
Within the cochlea are organ of Corti
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Traveling Waves
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