basilar papilla

It evolved from the basilar papilla found in all tetrapods, except for a few derived species that have lost it.

The basilar papilla is composed of cells called "hair cells" which are actually epithelial cells rather than true hairs.

The inner ear of the coelacanth is very similar to that of tetrapods because it is classified as being a basilar papilla.

Similarly, for females of the Tungara species, the female basilar papilla is biased towards a lower-than-average "chuck" portion of a male call.

The basilar papilla is the auditory sensory organ of lizards, amphibians, and birds, which is homologous to the Corti in mammals.

In the inner ear, the auditory hair cells are arranged in two areas of the cochlea, the basilar papilla and the amphibian papilla.

In most reptiles the perilymphatic duct and lagena are relatively short, and the sensory cells are confined to a small basilar papilla lying between them.

The low and mid frequency units are thought to derive from the amphibian papilla, whereas the high frequency units correspond to the basilar papilla.

Since the "Qui" note is a wide-band signal that sweeps upward in frequency, it appears as though the fibers innervating the female basilar papilla are better suited for detection of this component of the call.

However, they often lack a basilar papilla, having instead an entirely separate set of sensory cells at the upper edge of the saccule, referred to as the papilla amphibiorum, which appear to have the same function.

Since the peripheral auditory system of anurans has been implicated in the detection of temporal and spectral features of male calls, follow up experiments were performed on the two auditory organs of the inner ear, the amphibian papilla and basilar papilla.