Where and What Parts Are
Which is closer to the front of the eye? The retina or the pupil?
The pupil.
What does the optic nerve do?
It transmits signals to the brain.
About what percent of the eye is water?
About 98% of the eye is water.
What is one of the side effects that come from having eyes?
Entrance for disease and infection (ex. cancer) or being sensitive so they can be disoriented.
What type of system is the eye?
A physical system.
What is the lens? The part that controls depth or light intake?
It controls depth.
What does the iris do?
It widens and narrows the pupil.
Name 2 inputs for the eye.
2 of light, muscle, water.
What is sometihing that bats do primarily to replace seeing?
Bats use sonar.
Which part of your eye causes the red glare in pictures?
The choroid.
What and where is the pupil?
The pupil is the hole in the center of the iris.
What does the cornea do?
It bends the light towards the retina.
What is one thing that muscles do in the eye?
"Fine tune" the lens or iris. (Maybe something else)
Name one of the things that people can be disoriented by through their eyes. (that I listed)
Pepper spray, bright light, or tear gas.
What/where is the blind spot?
The blind spot is the spot where the optic nerve connects to the eye.
Is the vitreous humor or the aqueous humor closer to the front of the eye?
The aqueous humor is closer to the front of the eye.
What does the lens do?
It grows and shrinks depending on the depth of the object being focused on.
Are the tear glands on the top or bottom of the eye?
The tear glands are on the top of the eye.
How many deaths are there from Canadians by primary intraocular cancer per year?
There are 56 Canadian deaths from primary intraocular cancer per year.
What is a refractive problem?
It is when your cornea doesn't curve the light the way that it is supposed to.
What is the fovea?
It is a small indent in the back of the retina/macula.
What does the conjunctiva do?
The conjunctiva helps to guard the front of the eye (cornea).
What is the name for the type of impulses that are transmitted through the optic nerve.
Electrochemical impulses.
How many death from primary intraocular cancer are there per year? (In tens)
There are 370 deaths from primary intraocular cancer per year.
What does the choroid do?
It provides nourishment to the eye through nerves.