The outer ear consists of the auricle and the external auditory meatus. The outer ear picks up sound vibrations and directs them to the eardrum. The middle ear is represented by three auditory ossicles (malleus, anvil and stapes). The system of auditory ossicles, working as levers, increases the pressure of the sound wave by about 50 times.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.