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Student learn
- outline and compare the detection of vibrations by insects, fish and mammals
- describe the anatomy and function of the human ear, including:
- pinna
- tympanic membrane
- ear ossicles
- oval window
- round window
- cochlea
- organ of Corti
- auditory nerve
- outline the role of the Eustachian tube
- outline the path of a sound wave through the external, middle and inner ear and identify the energy transformations that occur
- describe the relationship between the distribution of hair cells in the organ of Corti and the detection of sounds of different frequencies
- outline the role of the sound shadow cast by the head in the location of sound
- gather, process and analyse information from secondary sources on the structure of a mammalian ear to relate structures to functions
- process information from secondary sources to outline the range of frequencies detected by humans as sound and compare this range with two other mammals, discussing possible reasons for the differences identified
- process information from secondary sources to evaluate a hearing aid and a cochlear implant in terms of:
- the position and type of energy transfer occurring
- conditions under which the technology will assist hearing
- limitations of each technology
