Eye Anatomy
Let There Be Light
Tissue Issue
Rods & Cones
Molecule Madness
100
This clear, curved structure is the first major part of the eye that bends incoming light.
What is the cornea?
100
The main thing entering your eye that makes vision possible.
What is light?
100
The clear tissue at the front of the eye has several layers and is known as this.
What is the cornea?
100
The long, narrow photoreceptor is this type of cell.
What is a rod?
100
This is the light-sensitive pigment found in rod cells.
What is rhodopsin?
200
This opening allows light to enter the eye.
What is the pupil?
200
The curved shape of the cornea causes incoming light to do this.
What is bend/refract?
200
The outermost layer of the cornea.
What is the epithelium?
200
This cell is associated with color vision.
What is a cone?
200
Rhodopsin contains a protein known as this.
What is opsin?
300
This structure controls how large or small the pupil becomes.
What is an iris?
300
The iris changes the pupil's size primarily to control this.
What is the amount of light entering the eye?
300
The middle corneal layer contains regularly arranged collagen fibers.
What is the stroma?
300
These photoreceptors are especially useful in poorly lit conditions.
What is a rod?
300
Light causes this molecule inside rhodopsin to change shape.
What is retinal?
400
Located behind the pupil, this structure helps focus incoming light onto the retina.
What is the lens?
400
The cornea and lens work together so light reaches this structure at the back of the eye.
What is the retina?
400
The regular arrangement of collagen helps the cornea maintain this important optical property.
What is transparency/clarity?
400
Rods and cones contain many stacked membranes because the stacks provide more of this for light-sensitive pigments.
What is surface area?
400
Retinal is derived from this vitamin.
What is vitamin A?
500
This tissue contains the cells that detect light.
What is the retina?
500
The rounded shape of the eye helps position the retina behind these two curved structures, allowing incoming light to be focused.
What are the cornea and lens?
500
This inner corneal layer regulates water in the stroma, preventing swelling and cloudiness.
What is the endothelium?
500
This portion communicates information to other retinal neurons.
What is the synaptic terminal?
500
When retinal changes from bent to straight, it changes opsin's shape and begins this biological process.
What is a signaling pathway?