Given below is the partially incomplete scheme of the components of the peripheral nervous system. Fill up the blanks numbered (1)-(8):

Two hungry boys (A and B) enter a restaurant and find a table decorated as follows:

Boy B starts salivating but not A. Explain the reason for this difference.

Given below are a few situations. What effective change will occur in the organ/body part mentioned and which part (sympathetic or parasympathetic) of the autonomic nervous system brings it about?

State the functions of the following:

(i) Eyelids ………………………………………

(ii) Eyelashes ………………………………………

(iii) Tears ………………………………………

(iv) Iris ………………………………………

(v) Ciliary muscles ………………………………

Write in proper sequence the names of all the parts of the human eye through which the light rays coming from an object pass before they form an image on the retina.