Eye Anatomy and Functions

What is the function of the eyelids?

• To protect the eyes from foreign particles and excessive light

• To enhance vision clarity

• To change the color of the eyes

• To improve night vision

What is the function of the conjunctiva?

• Protects and lubricates the eye

• Transmits visual information to the brain

• Controls the amount of light entering the eye

• Focuses light onto the retina

What does the lacrimal gland produce?

• The lacrimal gland produces tears.

• The lacrimal gland produces saliva.

• The lacrimal gland produces mucus.

• The lacrimal gland produces hormones.

What is the role of the lacrimal canal?

• It drains tears from the eyes into the nasal cavity.

• It produces tears.

• It stores tears.

• It filters tears.

What is the function of the nasolacrimal duct?

• Drains tears from the eyes into the nasal cavity

• Transports sound vibrations to the inner ear

• Regulates airflow in the nasal passages

• Produces mucus in the sinuses

What are extrinsic muscles responsible for?

• Movement of limbs

• Regulating blood flow

• Digesting food

• Producing hormones

What is the fibrous tunic?

• The outermost layer of the eye

• A type of muscle tissue

• A part of the digestive system

• A type of plant fiber

What is the sclera known as?

• sclera

• cornea

• retina

• iris

What is unique about the cornea?

• It is the only part of the human body without a blood supply.

• It is the only part of the human body that can regenerate.

• It is the only part of the human body that is transparent.

• It is the only part of the human body that can change color.

What is the function of the choroid?

• To provide oxygen and nutrients to the eye

• To control the amount of light entering the eye

• To focus light onto the retina

• To detect color and light intensity