Eye reflexes

Radial muscles are one set of muscles involved in the iris reflex. Name the other set.

• Circular muscles

• Suspensory ligaments

• Ciliary muscles

• Biceps

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.

Circular and radial muscles are responsible for ....

• Adjusting to distance.

• Accomodation.

• Adjusting to light.

Light cannot fall on the blind spot and thus no image is formed there.

• True
• False

The back of the eye;  an upside-down image of whatever you are looking at is projected here. 

• lens
• cornea
• pupi
• retina

Tags

NGSS.MS-LS1-8

The picture shows a dilated pupil. How did this happen?

• The circular muscles contract, the radial muscles relax

• The circular muscles relax, the radial muscles contract

• The circular muscles and the radial muscles relax

• The circular muscles and the radial muscles contract

The clear part of the eye that light will first pass through.

• Lens

• Cornea

• Sclera

• Retina

Which part of the eye opens in dark places and closes in bright places?  

• Cornea
• Retina
• Pupil
• Lens

Which part of the eye is where images are converted to nerve impulses?  

• Retina
• Cornea
• Optic Nerve
• Lens

Which part of the eye contains light sensitive nerves?  

• Cornea
• Lens
• Retina
• Vitreous Humor