Fluid exchange between capillaries and the interstitial fluid. takes place between the blood and interstitial fluid across the thin endothelial walls of the capillaries. blood pressure drives fluid out of the capillaries, blood proteins pull fluid back in the capillaries by osmotic pressure. Difference in osmotic pressure and blood pressure drives fluids out of capillaries at the arteriole end and into capillaries at the venule end.
Premarket approval (PMA) is the FDA process of scientific and regulatory review to evaluate the safety and effectiveness of Class III medical devices.remarket approval (PMA) is the FDA process of scientific and regulatory review to evaluate the safety and effectiveness of Class III medical devices.
premarket approval (PMA). [-marâ²kit]. permission given by the federal government to equipment manufacturers to sell their devices to the medical profession. Medical devices A scientific and regulatory review by the FDA to ensure the safety and effectiveness of a Class III device, before its approval for marketing.remarket approval (PMA). [-marâ²kit]. permission given by the federal government to equipment manufacturers to sell their devices to the medical profession. Medical devices A scientific and regulatory review by the FDA to ensure the safety and effectiveness of a Class III device, before its approval for marketing.