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.
Synthetic opiates act on the same areas of the brain as natural ones and produce many of the same effects. They are entirely human-made with chemicals not found in the poppy plant, morphine or opium. Thus, the chemicals used in these synthetic drugs vary.