Fig. 2 Transverse sections of the spiral organ and its tectorial membrane 

 taken from one side of a vertical section of the cochlea of an adult hog. A, 

 through the 7th half-turn of the coil, represents a section near the basal end of the 

 organ; B, C and D represent respectively sections through the 5th, 3rd and 1st 

 half turns of the coil. 



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