Tympanic cavity is part of
Name the following : (a) The photosensitive pigment present in the rods of the retina. (b) The part which equalises the air pressure in the middle and external ear. (c) The ear ossicle attached to the tympanum. (d) The outermost covering layer of the brain. (e) The tube which connects the cavity of the middle ear with the throat. (f) The part of the eye responsible for its shape. (g)The nerves which transmit the impulse from the ear to the brain. (h) The photoreceptors found in the retina of the eye. (i)The eye defect caused due to shortening of the eyeball from front to back.