Pinna and External Ear Canal | Veterian Key
Jul 18, 2016 · The Pinna. The canine pinna is a wonderfully diverse structure with breed-related differences in shape, size, and conformation. Less variety is seen among feline breeds. Evolutionarily, the pinna is a focusing and localizing device, directing sound toward the middle ear, and as such has rich muscular, nervous, and vascular contributions.
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