Interaction and health

Light enters our eyes through.....

• cornea and pupil

• iris and pupil

• lens and retina

The_____ is a muscle that make the pupil bigger or smaller.

• retina

• iris

• lens

• cornea

The______ focuses the light.

• retina

• iris

• cornea

• lens

Nerve receptors in the retina send this information along the...

Our ear has...

• two parts

• three parts

• four parts

Sounds waves enter the ear through...

• eardrum

• cochlea

• auditory canal

• auditory nerve

Sounds wave make the_______vibrate

• cochlea

• auditory nerve

• semicircular canals

• eardrum

The_______transforms the sounds vibrations into electrical signals.

The ________sends this signals to our brain.

• cochlea

• auditory nerve

• semicircular canals

What does it help us keep our balance?

• eardrum

• auditory canal

• semicircular canals