Week 4: perception & sensations

Where is the cornea located?

• The cornea is the clear outer part of the eye’s focusing

  system located at the front of the eye.

• The back of the eye

• In the middle of the eye.

• I don't know!

Answer explanation

The cornea is the clear outer part of the eye’s focusing

system located at the front of the eye.

The iris is the colored part of the eye that regulates the amount

of light entering the eye.

• True

• False

Answer explanation

Iris: The iris is the colored part of the eye that regulates the amount

of light entering the eye.

Lens: The lens is a clear part of the eye behind the iris that helps to

focus light, or an image, on the retina.

• The clear part of the eye.

• the colored part of the eye

• A beautiful flower

• I don't know I better view the answer

Answer explanation

Lens: The lens is a clear part of the eye behind the iris that helps to

focus light, or an image, on the retina.

The macula is the small, sensitive area of the retina that

gives central vision. It is located in the center of the retina.

• false

• true

• I don't know. Let me check the answer.

Answer explanation

Macula: The macula is the small, sensitive area of the retina that

gives central vision. It is located in the center of the retina.

What is the largest sensory nerve in the eye

• Severed nerve

• Cranial nerve

• Optic nerve

• I don't know. let me view answer for explanation.

Answer explanation

Optic nerve: The optic nerve is the largest sensory nerve of the eye.

Pupil: The pupil is the opening at the center of the iris. The iris

• False

• True

• I don't know

Answer explanation

Pupil: The pupil is the opening at the center of the iris. The iris

The retina is the light-sensitive tissue at the back of the eye.The retina converts light into electrical impulses that are sent to the

brain through the optic nerve.

• True

• False

Answer explanation

Retina: The retina is the light-sensitive tissue at the back of the eye.The retina converts light into electrical impulses that are sent to the

brain through the optic nerve.

Vitreous gel: The vitreous gel is a transparent, colorless mass that fills the rear two-thirds of the eyeball, between the lens and the retina.

• False

• True

Answer explanation

Vitreous gel: The vitreous gel is a transparent, colorless mass that