Download - The Human Eye
By: Stephanie M. Faura
THE HUMAN EYE
This is how an eye looks like when your looking at a person
This is the parts ofthe eye
The eye is used for many things. Many people don’t know the wonders of the eye or how facinating it really is.
THE EYE
• Light is a kind of energy• Travels 186,000 miles per second• The light that you see from the sun was light that the sun
gave out 8 minutes ago• When light travels between two places it travels in waves
of energy• Light (waves) behave in four ways reflection, refraction,
diffraction, and interference• Christiaan Huygens (1629–1695) said that light was
waves• Sir Isaac Newton (1642–1727) thought that light was a
stream of particles
LIGHT
These are Sun rays
• The outer layer of the eye• Clear and Transparent • Provides about 70% of the eye's refractive power• Contains no blood vessels, damaging the cornea can be
very painful• Has five layers: the epithelium, Bowman's membrane,
the stroma, Descement's membrane, and endothelium
CORNEA
• The pupil is a hole in the center of the iris• Where the lens is
PUPIL
• Transparent tissue• The lens is behind the pupil• Lens help to focus images on
the retina• Lens can change shape by
bending to focus on light
LENS
• The iris is the colored part of the eye just behind the cornea
• Colors can vary between people• What is really fascinating about the iris is that it is like a
fingerprint • The iris pattern is different for every person • Not even twins have a same looking iris
IRIS
The iris
• Gel-like substance• Between the lens and the retina• Also keeps the shape of the eye.
VITREOUS HUMOR
Vitreous Humor
• Thin layer of tissue that contains nerve cells• Cells are responsive to light• In the back portion of the eye
RETINA
• They able to make you see black and white• Don’t see color• React to low light levels
ROD CELLS
• Used for seeing color in bright conditions
CONE CELLS
• Graduated potentials is a signal that passes threw the bipolar cell to get to the ganglion cells
• Bipolar cells are connected to horizontal cell
BIPOLAR CELLS
• Connected to the Bipolar cells
GANGLION CELLS
• Part of the neuron that transmits nervous impulses• Thickness of axons varies• Thick axons carry nerve impulses more quickly• Covered with a thick layer of the cell's fatty membrane
AXONS
• Branch-like structures on neurons• Detect chemical signals
DENDRITES
• Collects nerve impulses • Carries them to the brain• Interprets them as an image
OPTIC NERVE
• http://en.wikipedia.org/wiki/Eye• http://
jsuniltutorial.weebly.com/the-human-eye-and-the-colourful-world.html
• http://srxawordonhealth.com/2013/01/• http://deskarati.com/2010/10/14/what-are-crepuscular-rays/• http://www.stlukeseye.com/anatomy/pupil.html• http://www.classichousewife.com/2013/05/07/home-dissection-
science-tools-review/
• http://www.dailymail.co.uk/sciencetech/article-2246888/The-eyes-The-iris-pictured-remarkable-incredible-close-shots.html
• http://toadhaven.com/Toadhaven/Dissection.html• http://www.easynotecards.com/print_list/29843• http://medical-dictionary.thefreedictionary.com/dendrite• http://
www.georgiavisioncare.com/services_glaucoma_ophthalmologists.htm
URLS FOR PICTURES
• http://webpath.follettsoftware.com/resource/viewurl?encodedUrl=fwOzSY0hxFtQpQi_F8kSfBerL-u6EwFwLNhdxAWvZ5w&version=1&appsignature=Destiny&appversion=12.0.6.2+%2812_0_AU2_RC2%29
• http://webpath.follettsoftware.com/resource/viewurl?encodedUrl=ckNX_h27bCFPSuZnn2QXdEpsP-uiSEFKB23kmGHFZRk&version=1&appsignature=Destiny&appversion=12.0.6.2+%2812_0_AU2_RC2%29
• http://ic.galegroup.com/ic/scic/ReferenceDetailsPage/ReferenceDetailsWindow?failOverType=&query=&prodId=SCIC&windowstate=normal&contentModules=&display-query=&mode=view&displayGroupName=Reference&limiter=&u=theparksch&currPage=&disableHighlighting=false&displayGroups=&sortBy=&source=&search_within_results=&p=SCIC&action=e&catId=&activityType=&scanId=&documentId=GALE|KDGLSU867104724
• http://webpath.follettsoftware.com/resource/viewurl?encodedUrl=plo2j1Ikxcj5uQozTp-kxRdoZY2O3Hq5UJCUu6hpiSc&version=1&appsignature=Destiny&appversion=12.0.6.2+%2812_0_AU2_RC2%29
• http://ic.galegroup.com/ic/scic/ReferenceDetailsPage/ReferenceDetailsWindow?failOverType=&query=&prodId=SCIC&windowstate=normal&contentModules=&display-query=&mode=view&displayGroupName=Reference&limiter=&u=theparksch&currPage=&disableHighlighting=false&displayGroups=&sortBy=&source=&search_within_results=&p=SCIC&action=e&catId=&activityType=&scanId=&documentId=GALE|GYDGGW095268854
RECORCES
• http://webpath.follettsoftware.com/resource/viewurl?encodedUrl=fwOzSY0hxFtQpQi_F8kSfIezj2YJ55uU9Om00Xyq_y8&version=1&appsignature=Destiny&appversion=12.0.6.2+%2812_0_AU2_RC2%29
RECORCES 2