AP Psychology Practice Test

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Question: 1 / 530

What is the function of the cochlea?

To amplify sound waves.

To process equilibrium.

To transfer sound vibrations into nerve impulses.

The cochlea plays a critical role in hearing by converting sound waves into nerve impulses. This spiral-shaped structure within the inner ear contains fluid and hair cells that are essential for this process. When sound waves enter the cochlea, they create ripples in the fluid, which in turn cause the hair cells to move. This movement stimulates the auditory nerve endings, transforming the mechanical energy of sound waves into electrical signals that can be interpreted by the brain. This critical function is vital for our ability to perceive and understand sounds in our environment. Other options do not accurately reflect the cochlea’s primary role; it is not primarily involved in amplifying sound waves, processing equilibrium, or merely vibrating in response to sound.

AP Psychology Practice Test

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