Complete the following table by filling in the blank space.

Structure	Function
Yellow Spot	_______________
_______________	Transfers impulse from inner ear to brain
_______________	Helps to change the focal length of the eye lens
Spinal cord	_______________
Oval window	_______________
_______________	Dynamic equilibrium

Where are the following located? Briefly, mention the function of each:

(a) Oval window

(b) Cochlea

(c) Semicircular canals

(d) Utriculus

Name the four principal tastes and the respective regions of the tongue concerned with their perception.

Describe the mechanism of focusing the image of a distant object in your eye when you raise your head after reading a book.

Sometimes you remember a vivid picture of a dream you saw. What is the role of your eyes in this experience?