The Eyes

Which layer of the eyeball contains many blood vessels and provides the blood supply for the entire eye?

• Retina

• Choroid

• Cornea

• Sclera

Which structure of the eye receives nerve impulses and transmits them to the brain via the optic nerve?

• Retina

• Aqueous fluid

• Cornea

• Choroid

What is the primary function of the anterior segment of the eyeball?

• Receives nerve impulses

• Provides blood supply

• Makes up the front one-third of the eyeball

• Filters and drains aqueous fluid

What is the function of the trabecular meshwork and canal of Schlemm in the eye?

• Maintain the shape of the eye

• Receive images through the lens

• Filter and drain aqueous fluid

• Adjust the thickness of the lens

What is the measurement of the fluid pressure inside the eye called?

• Intraocular pressure

• Optic disk

• Aqueous fluid

• Posterior segment

Which segment of the eyeball is lined with the retina and filled with vitreous gel?

• Choroid

• Posterior segment

• Cornea

• Anterior segment

What is the function of the rods and cones in the retina?

• Receive images through the lens

• Filter and drain aqueous fluid

• Maintain the shape of the eye

• Receive and process visual information

Where is color vision best in the eye due to a high concentration of cones and no rods?

• Optic disk

• Choroid

• Fovea centralis

• Macula

What is the function of the lacrimal apparatus in the eye?

• Produce, store, and remove tears

• Adjust the thickness of the lens

• Maintain the shape of the eye

• Filter and drain aqueous fluid

What is the function of the sclera in the eye?

• Filters and drains aqueous fluid

• Provides blood supply

• Receives nerve impulses

• Maintains the shape of the eye