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 is the way in which cells are able to import larger molecules through the cell membrane. The cell membrane is a barrier which surrounds all cells and only allows small and uncharged molecules to pass through freely. Larger molecules, such as glucose, require special transporting proteins. The transporters for glucose bind to glucose molecules and then facilitate their transfer into the cell. There are five different types of glucose transporters, named GLUT 1-5.