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.
â¢ Moves solutes and solvents across a cell membrane, from higher to lower concentration. â¢ Simple diffusion â passive transport of small solutes thru the lipid bilayer. â¢ Facilitated diffusion â transfer of larger molecules thru carrier or channel proteins. â¢ Osmosis â diffusion of water thru the lipid bilayer. Active Transport â¢ Requires the use of energy. â¢ ATP breakdown to ADP provide energy.