Structure of Human Eye Quiz

What are the three main parts of the human eye?

• Cornea, iris, and lens

• Sclera, vitreous humor, and ciliary body

• Retina, pupil, and optic nerve

• Eyelid, tear duct, and conjunctiva

Name the part of the eye that controls the amount of light entering the eye.

• retina

• iris

• pupil

• cornea

What is the function of the cornea in the human eye?

• To produce tears for lubrication

• To regulate blood flow in the eye

• To focus light into the eye.

• To control the movement of the eye

Explain how the cornea helps in focusing light onto the retina.

• Filters out harmful UV rays

• Bends light rays as they enter the eye

• Reflects light onto the retina

• Absorbs excess light entering the eye

What is the role of the lens in the human eye?

• To absorb excess light

• To produce tears

• To regulate the amount of oxygen entering the eye

• To focus light onto the retina

How does the lens change its shape to focus on objects at different distances?

• Contraction

• Refraction

• Accommodation

• Expansion

Describe the structure of the retina in the human eye.

• The retina consists of photoreceptor cells, layers of cells for processing visual information, and nerve fibers.

• The retina is responsible for producing tears

• The retina is a transparent layer covering the eye

• The retina is made up of muscles and blood vessels

What is the function of the optic nerve in the human eye?

• Produce tears to keep the eye moist

• Help the eye to focus on objects at different distances

• Transmit visual information from the retina to the brain

• Regulate the amount of light entering the eye

How does the optic nerve transmit visual information to the brain?

• Through magnetic fields

• Through chemical reactions

• Through electrical signals

• Through mechanical vibrations

Explain the pathway of the optic nerve from the retina to the brain.

• The optic nerve carries auditory information from the brain to the retina.

• The optic nerve travels from the brain to the retina to carry visual information.

• The optic nerve does not play a role in transmitting information from the retina to the brain.

• The optic nerve carries visual information from the retina to the brain.