Find the appropriate word and fill blank (ii).

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.

Our ear collects the sound from the surroundings. Pinna or the ____(i)_____ ear receives the signal and passes it through the auditory _____(ii)_______. When the sound wave reaches the eardrum or tympanic _______(iii)______, the pressure on the outside of the membrane increases and forces the eardrum inward. It leads to vibration of the eardrum. The middle ear transmits pressure _______(iv)______ received from the sound wave to the inner ear through three small bones called ear ossicles.