Multiple types of neural tissues arise from the neural crest, including sympathetic ganglia, parasympathetic ganglia, spinal ganglia and the enteric nervous system. Non-neural cells derived from the neural crest include melanocytes, satellite cells of ganglia, Schwann cells and the adrenal medulla.
The definition of a soffit is the underside of a piece of architecture. An example of a soffit is the underside of an arch. soffit. the horizontal underside of an eave, cornice, etc. soffit.
For appearance purposes in open soffit construction, provide adequate blocking, tongue-and-groove edges, or other edge support such as panel clips. Minimum capacities are at least 30 psf live load, plus 10 psf dead load. For open soffit construction, panels designated Exposure 1 may be used. Exterior panels should be used for closed soffits (Figure 2). In open and closed soffit construction where Exposure 1 sheathing is used for roof decking, protect panel edges against direct exposure to the weather with fascia trim.