Lesson 3, Human Eye Anatomy, vocab

What is the cornea?

• A type of muscle in the eye

• A clear membrane covering the front of the eye

• The colored part of the eye

• The fluid inside the eye

What is the pupil's function?

• To control the shape of the lens

• To allow light to enter the eye

• To focus light on the retina

• To send nerve signals to the brain

What does the iris do?

• It focuses the image on the retina

• It gives the eye its color and controls the amount of light entering

• It detects colors in the environment

• It sends signals to the optic nerve

What is the lens?

• A structure that bends and focuses light onto the retina

• A fluid-filled chamber in the eye

• A muscle that moves the eye

• A nerve that connects the eye to the brain

What is the retina?

• The fluid-filled chamber in front of the lens

• A surface at the back of the eye with light-sensitive cells

• A muscle that controls the pupil's size

• A layer that covers the cornea

What are rods and cones?

• Nerves that connect the eye to the brain

• Light-sensitive cells in the retina for vision in dim light and color vision

• Muscles that adjust the eye's focus

• Layers of tissue protecting the retina

What is the role of the optic nerve?

• To bend light entering the eye

• To adjust the shape of the lens

• To carry signals from the retina to the brain

• To control the movement of the eye