What is the main function of the pinna?

The main function of the pinna, also known as the auricle, is to capture and direct sound waves down the ear canal. The unique shape and structure of the pinna allow it to serve as a funnel that collects sound waves from the environment. Once sound waves enter the pinna, they are channeled into the ear canal, leading to the eardrum where further processing of the sound occurs.

The pinna plays a crucial role in helping us perceive the direction and elevation of sounds, which is essential for locating sounds in our environment. Its design enhances our ability to hear by improving the collection of sounds, particularly those coming from in front of us. Understanding this physical function highlights the importance of the pinna in the overall auditory system and its contribution to hearing performance.