Transcript Parts of the eye

P A R T S
O F
Viviana Guzman
4/28/14
Life science
Period 5
T H E
E Y E
WHAT IS THE EYE?
•
The eye is each of a pair of globular organs in the head through which
people and vertebrate animals see, the visible part typically appearing
almond-shaped in animals with eyelids.
TEAM 1-ANATOMY:THE STRUCTURE OF THE
EYE
What are some of the parts of the eye?
•
The Iris is a flat, colored, ring-shaped membrane behind the cornea of the
eye, with an adjustable circular opening (pupil) in the center. The Iris main
job is to block the pupil and let just enough light in the pupil. If there's not
enough light it allows the pupil to widen and open up more. Other then
that the Iris is a beautiful creation of your eyes. It is a gorgeous, colorful,
extraordinary piece of art.
• The outer layer of our eye is called the Cornea. The cornea is the
transparent layer forming the front of the eye. It is almost like a clear ball
protecting the inside.
•
The crystalline Lens is the transparent, biconvex structure in the eye
that, along with the cornea, helps to refract light to be focused on the
retina.
THE “WHITE” PART OF THE EYE
•
the “WHITE” PART OF THE EYE IS CALLED THE Conjunctiva is the
mucous membrane that covers the front of the eye and lines the inside of
the eyelids.
EXAMPLE OF BAD AND HEALTHY CONJUNCTIVA
TEAM 2-FOCUS
•
When the eye is relaxed and the interior lens is the least rounded, the
lens has its maximum focal length for distant viewing . As the muscle
tension around the ring of muscle is increased and the supporting fibers
are thereby loosened, the interior lens rounds out to its minimum focal
length
LET'S SEE WHAT YOU KNOW SO FAR!
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What is the eye?
•
Name four parts of the eye?
•
Which is the outer layer of your eye?
1. Iris
2. Pupil
3. Cornea
•
Do your cones in your eye allow you to see color?
1. True
2. false
HOW EYE ACCOMMODATION WORKS
WHAT'S IN THE BACK?
w h a t ' s
•
I N
T H E
B A C K
O F
Y O U R
E Y E ?
in THE BACK OF YOUR EYE YOU HAVE WHAT IS CALLED THE
RETINA. THE RETINA IS a layer at the back of the eyeball containing
cells that are sensitive to light and that trigger nerve impulses that pass
via the optic nerve to the brain, where a visual image is formed.
DO YOU UNDERSTAND, YES, NO, MAYBE
SO?
•
WHAT IS THE RETINA?
•
What is the “white” part of the eye called?
1. Conjunctiva
2. Iris
3. Cornea
Got everything correct?
Great!!