Fill in the blanks and choose the correct option given below.
(i) A connects middle ear cavity with the pharynx.
(ii) The fluid filled inner ear is called B
(iii) Membranous labyrinth is surrounded by C fluid and it is filled with D fluid.
(iv) At the base of the cochlea, the scala vestibule ends at the E window, while the scala tympani terminate at the F window
(v) G is a structure located on the basilar membrane which contains hair cells
(vi) H cells act as auditory receptors.
(vii) A large number of processes called I are projected from the apical part of each cell.
(viii) Above the rows of the hair cells is a thin elastic membrane called J membrane.
(ix) The vestibular apparatus is composed of three K and L.
(x) The M and N are the specific receptors of the vestibular apparatus responsible for maintenance of balance of the body and posture.
(xi) The movements of O membrane bend the hair cells pressing them against P membrane, which result in generation of nerve impulse