Parts of the Eye and Their Functions

What is the tough, white outer coating of the eye called?

• Sclera

• Cornea

• Retina

• Iris

What is the transparent front region of the sclera called?

• Cornea

• Iris

• Retina

• Lens

What is the transparent biconvex structure that bends light, focusing it on the retina?

• Lens

• Cornea

• Iris

• Retina

What holds the lens in place in the eye?

• Suspensory ligament

• Cornea

• Retina

• Optic nerve

What is the coloured disc that can expand and contract to allow more or less light through?

• Iris

• Cornea

• Lens

• Retina

What is the hole in the centre of the iris, which allows light into the eye?

• Pupil

• Cornea

• Lens

• Retina

What is the region behind the iris that secretes jelly-like fluid that fills the eye?

• Ciliary body

• Retina

• Cornea

• Optic nerve

What controls the shape of the lens, for focusing light on to the retina?

• Ciliary muscle

• Optic nerve

• Retina

• Cornea

What is the thin sheet of receptor cells that respond to light in the eye called?

• Retina

• Cornea

• Lens

• Iris

Tags

NGSS.MS-LS1-2

What is the bundle of nerve fibres from the receptors in the retina called?

• Optic nerve

• Auditory nerve

• Olfactory nerve

• Spinal nerve