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The Human Eye
Nervous System and the Senses
"If you're here, you've been using your eyes. But how much do you know about these interesting organs?"
15 Points Per Correct Answer - No time limit
Which eye disorder causes an opacity in the lens, which if left uncured, may blind you?
Which of these sentences most accurately describes the function of the eyelid?
Rests the eye, ensuring it does not get too tired
Allows blood flow throughout the eye
Focuses the eye, by maintaining its pressure
Wipes the eyes, and prevents dehydration
Which sentence is untrue about the function of the eyebrow?
Defines the face, helping express various emotions
May catch falling particles before they reach the eye
None of these are untrue
Redirects flowing substances away from the eye
I'm outside in the blazing sun. It is shining heavily. For some reason, there's a mirror on a wall. I look inside it, what do I notice about my eyes?
They are burning
The irises are very small
The pupils are very small
The pupils have dilated
When reading a book, your lenses need to adjust to focus the light that enters the eye. Which of these statements is true as to how the lenses have adjusted by the ciliary muscles?
Lenses are relaxed - they become weaker and rounder
Lenses are squeezed and contracted - they become stronger and rounder
Lenses are relaxed - they become stronger and flatter
Lenses are squeezed and contracted - they become stronger and flatter
There are 5 areas of the visual cortex, known as V1, V2 etc. Which area primarily deals with interpreting motion?
Which of these is located between the cornea and lens, maintains the convex shape of the cornea with its pressure, provides nutrition for ocular tissues, and carries away the waste from said tissues?
Given that in rods, the photochemical that breaks down and then sends an impulse up the optic nerve is called rhodopsin, which chemical do cones contain for the same purpose?
In front of the photosensitive cells are two other types of cells. But which are the ones the light would hit first?
The ganglion cells and bipolar cells are in front of the rods and cones, and are all in the retina - but can you put them in order of quantity (greatest - smallest)?
Ganglion cells - Rods + Cones - Bipolar cells
Rods + Cones - Bipolar cells - Ganglion cells
Ganglion cells - Bipolar cells - Rods + Cones
Bipolar cells - Ganglion cells - Rods + Cones
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Compiled May 21 13