Audio Fundamentals Collier Test 1 Practice

The main idea is recognizing the cochlea as the tubular, spiral structure of the inner ear that is filled with fluid. The cochlea is shaped like a tiny snail and runs as a long, coiled tube. Inside it, there are two major fluid-filled channels—the scala vestibuli and the scala tympani—that surround the central duct (the cochlear duct). These fluids create the environment in which sound waves travel and interact with the sensory cells, helping convert vibrations into neural signals. The other structures listed aren’t tubular, snail-shaped organs with these fluid chambers: the oval window is simply the entry point into the cochlea, the basilar membrane is a vibrating floor inside the cochlea, and the organ of Corti is the sensory organ located on that membrane.