structure of eye and accommodation

Circular and radial muscles are responsible for ....

• Adjusting to distance.

• Accomodation.

• Adjusting to light.

Why would the pupil get smaller in diameter?

• To let in less light.

• To let in more light.

• To be selective over the wavelength of light that enters.

During accomodation, if ciliary muscles contract up close, what do they do accomodating objects far away?

• Also contract

• Relax

Ciliary muscles Contract up Close, so which image shows accomodation of nearby objects?

• A

• B

• Neither

Rods detect grey, black and white. Cones detect colour. Where are rods and cones?

• retina

• fovea

• iris

• sclera

The eye is part of which section of the nervous system?

• Peripheral nervous system

• Central nervous system

Which part of the eye provides a link to the brain?

• Cornea

• Lens

• Conjuctiva

• Optic nerve

Ciliary muscles Contract up Close (CCC).

State the process this mnemonic (memory tool) describes.

• How the eye sees objects close by.

• How the eye sees objectd far away.

• How the eye sees everything.

• Nothing. Trick question.

'Adapting the eye to see different distances'

• accomodation

• adjustment

• cornification

• short sightedness

State the name of the process of adjusting to light.

• Iris reflex

• Cornea reflex

• Accomodation

• Ajudication