Diameter of the human eye is :

A transparent layer in front of the eyeball is :

Coloured part of the eye is called:

Most sensitive part of the retina is called:

The nerve that takes information from the eye to the brain is called:

Snail shaped organ in the inner ear is called:

This part of the ear helps us in balance:

How many sacs join the cochlea to the semi circular canals and act as gravity detectors?

Which part of the eye contains light sensory cells?

Thickness of the eye lens is controlled by the:

Fingertips can detect temperature differences as small as:

Thickness of the skin on the soles of the feet is:

A black layer that stops light reflecting inside the eyeball is called: