FIGURE 2 | The organ of Corti.
From the following article:
Regulation of cell fate in the sensory epithelia of the inner ear
Matthew W. Kelley
Nature Reviews Neuroscience 7, 837-849 (November 2006)
doi:10.1038/nrn1987
a | Cross-section through the organ of Corti in an adult mouse. A single inner hair cell (IHC) and three outer hair cells (O1–3) are separated by the tunnel of Corti (TC). The tunnel is formed by two cell types, the inner pillar cells (IPC) and the outer pillar cells (OPC), each of which extends a projection to the lumenal surface. Inner hair cells are separated from one another by inner phalangeal supporting cells (PhC), whereas outer hair cells are separated by Deiters' supporting cells (D1–3). The tectorial membrane (TM) overlies the sensory epithelium and normally contacts the stereocilia of the outer hair cells (the TM in this section has retracted away from the outer hair cells as a result of fixation). b | Three-dimensional depiction of the organ of Corti illustrating the organization of hair cells and supporting cells into rows. A single row of IHCs and PhCs is located adjacent to single rows of IPCs and OPCs. Three rows of outer hair cells and Deiters' cells are located next to the row of OPCs.
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