An example of the use of interrupted sutures after removal of palatal bony exostosis. A, A smallpalatal exostosis thatinterferes withproperdenture constructioninthisarea.B,Acrestal incision and mucoperios-teal ï¬ap reï¬ection to expose the palatal exostosis. C, Use of a bone ï¬le to remove bony excess.
A: Facilitated diffusion differs from simple diffusion in that it crosses a membrane with the aid of passive transport proteins embedded in the membrane. Both types of diffusion are the movement of particles in solution from areas of higher concentration to areas of lower concentration.
Facilitated diffusion, also called carrier-mediated diffusion, is the movement of molecules across the cell membrane via special transport proteins that are embedded within the cellular membrane. Many large molecules, such as glucose, are insoluble in lipids and too large to fit through the membrane pores.assive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input.