Pinna
The outermost part of the ear which collects sound waves from the environment
Pinna is the visible part of the ear located on the outermost part of the head. It is also referred to as the auricle or the external ear. The pinna is responsible for collecting sounds from the environment and funneling them into the auditory canal to be transmitted further into the ear.
The shape of the pinna plays an important role in helping us localize the direction of sound sources. It also helps to amplify high-frequency sounds, making it easier for us to hear them. The size and shape of the pinna can vary among individuals and can be influenced by genetics or environmental factors.
The pinna comprises three main parts: the helix, the antihelix, and the lobule. The helix is the curled ridge that runs along the outer edge of the pinna, while the antihelix is the smaller ridge that runs parallel to the helix. The lobule is the fleshy, rounded part at the bottom of the pinna and is commonly referred to as the earlobe.
In summary, the pinna is an essential part of the ear that helps to collect and amplify sounds from the environment, and plays a crucial role in helping us to localize the direction of sound sources.
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