How We See Part 1: Eyes

The video explains how a significant portion of the brain is dedicated to vision, detailing the structure and function of the eye's key parts: cornea, pupil, iris, lens, and retina. It highlights the retina's role in light detection through rods and cones, and how these signals are transmitted via the optic nerve to the brain, which then processes them into sight.

Which part of the eye is responsible for bending light as it enters?

• Lens

• Retina

• Cornea

• Iris

What is the function of the iris in the eye?

• To convert light into electrical impulses

• To focus light onto the retina

• To change the size of the pupil

• To detect color

What causes the red-eye effect in photographs?

• The blood vessels behind the retina

• The expansion of the pupil

• The reflection of light from the cornea

• The presence of rod cells

Which type of cell in the retina is responsible for detecting color?

• Rods

• Cones

• Blood vessels

• Optic nerve cells

What is the role of the optic nerve in vision?

• To focus light onto the retina

• To carry electrical impulses to the brain

• To detect motion

• To change the size of the pupil