The cartilages are placed horizontally above each other, separated by narrow intervals. They measure about 4 mm in depth and 1 mm in thickness. Their outer surfaces are flattened in a vertical direction, but the internal are convex, the cartilages being thicker in the middle than at the margins.
A synthetic analog is a: synthetically created compound that differs from the Natural compound. Both in it's structure and function. Although probably very similar to the original compound.
The name of the synthetic analogue of wool would be Polyacrylonitrile (PAN). It is a synthetic resin prepared by the polymerization of acrylonitrile. Hope this answers the question. Have a nice day. Feel free to ask more questions. Thank you.