Auricle (anatomy)
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The auricle or auricula is the visible part of the ear that is outside the head. It is also called the pinna, a term that is used more in zoology.
The fennec fox uses its distinctive oversized pinnae to radiate excess heat and to amplify the sound of small prey burrowing under the desert sand.
To an impala, the pinna is useful in collecting sound.
External ear. Right auricle. Lateral view.
External ear. Right auricle. Lateral view.
Helix (ear)
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The helix is the prominent rim of the auricle. Where the helix turns downwards posteriorly, a small tubercle is sometimes seen, namely the auricular tubercle of Darwin.
Auricle (anatomy)
…Fossa triangularis is the depression in the fork of the antihelix Helix is the folded over outside edge of the ear Incisura anterior auris, or intertragic incisure, or intertragal notch, is the space between the tragus and…
Left: Darwin's tubercle. Right: the homologous point in a macaque.
External ear. Right auricle. Lateral view.