a thin membrane stretching across the ear canal is the
Biology · Middle School · Mon Jan 18 2021
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Correct answer is ear drum .
Eardrum is the thin stretched membrane at the end of inner ear , which vibrates when sound wave strikes it .The thin semitransparent tympanic membrane, or eardrum, which forms the boundary between the outer ear and the middle ear, is stretched obliquely across the end of the external canal.
The stretched-membrane concept is a potentially low-cost and structurally efficient method of attaining and supporting a large, optically accurate surface for heliostat applications. In this concept, a high-strength structural film coated with a highly reflective surface is stretched uniformly on a torroidal frame.