Typically, engineered wood products are made from the same hardwoods and softwoods used to manufacture lumber. Sawmill scraps and other wood waste can be used for engineered wood composed of wood particles or fibers, but whole logs are usually used for veneers, such as plywood, MDF or particle board.
Mucus is a slippery secretion of the lining of various membranes in the body (mucous membranes). It is a viscous colloid containing antiseptic enzymes (such as lysozyme) and immunoglobulins. Mucus is produced by goblet cells in the mucous membranes that cover the surfaces of the membranes.
Mucus in the mouth usually arises from three sites 1  : Salivary and buccal glands of the mouth. 2  Mucus from the nose and paranasal sinuses. 3  Mucus from the airways including the throat, larynx and trachea.xcessive mucus in the nasal cavity including from the paranasal sinuses may drain into the mouth. It is part of the airway but discussed separately since it is one of the main causes of excessive mucus in the mouth. This includes 1  : Rhinitis (inflammation of the nose) : â 2  Infections, particularly viral and bacterial.