The glands which help in absorbing odoriferous substances to stimulate the olfactory nerve are

State the main functions of the following:

Tears.

The diagram illustrates a transverse section of a human eye.

(a) Identify the label matching each function: $\quad[3]$

(ii) sends impulses to the brain

State the function of the following.

Tears

State the function of parts of the eye 1, 2, and 7.

Give the functions of parts numbered 1,5 and 8 in the given diagram.

Where are the following located? State their main functions.

Lacrimal gland

Rewrite the following set of terms in the correct sequence.

Conjunctiva, retina, cornea, optic nerve, lens.

The diagram given is a cross-section of the human eye.

Give the functions of the parts labelled 1, 3, 6.

Name the following:

Three layer of eyeball

Give reasons

Sometimes medicines dropped into the eyes come into the nose and even the throat.

Give the reason for the following

Medicine dropped in the eye flow down in the nose.