Crash Course: Eye Sight/ Vision

What percentage of sensory receptors within the body are found in the eye:

• 7000%

• 7%

• 700%

• 70%

Long low frequencies will appear ___ to us.

• yellow

• green

• red

• white

• blue

The _______ in your eyes convert light energy into nerve impulses that the brain can understand.

• semi-circular canals

• pupils

• photoreceptors

• cochleas

These can trigger blinking....

• eyebrows

• malleauses 

• retinas

• eyelashes

The window that lets light into the eye is the ______.

• lacrimal apparatus  

• cornea

• retina

• sclera

The iris is made of ______ so that it can let more light in or less light.

• muscle

• lacriamal

• sclera

• crayons

The hole in the middle of your iris is called the ______.

• cornea

• pupil

• iris

• doughnut hole

The disc that focuses light and projects it to the retina is called the _____.

• lens

• retina

• pupil

• cornea

The sensory neurons need to connect to the ______ so that they can send messages to the brain about what they are seeing.

• Ganglion cells

• Bipoloar neurons

• Rods and Cones

The nerve that carries impulses from the retina to the brain:

• Cochlear nerve

• Trigeminal nerve

• Vagus

• Optic nerve