Anatomically speaking, the model shows 2 parts: A small part which shows almost the entire cochlea and a much larger part which shows a cross-section from the organ.
The small part gives an overall insight into the cochlea and its division into the 3 parallel systems/runs, which are educationally shown in different colours. In the middle of this system is the ductus cochlearis with the endolymph (also called scala media). The scala vestibuli and scala tympani, on the other hand, contain the perilymph, and they proceed respectively above and below the cochlear duct.
The large part of the model shows a cross-section through the ductus cochlearis with the scala vestibuli and scala tympani respectively. over and under. Centrally, the membrana basilaris is seen, which is set into resonant oscillations in connection with hearing. These oscillations are registered by the complex system of sensory cells (the cortical organ) which is attached to the said membrane.
The model thus provides the opportunity to study the anatomical structures that are crucial for the formation of the sensory impression (via the sensory cells), which is sent to the brain with the auditory nerve (sound perception).
You can see i.a. the following structures:
Membrana tectoria and membrana vestibularis (Reissner's membrane)
Many cell types such as Hensen cells, Claudius cells and Böttcher cells
Cuniculus internus (cortical tunnel)
Ligament spiral
N. cochlearis and spiral ganglion
