A tough, sheetlike membrane that covers and protects the tissue is a ____

If you mix 222 grams of an ointment base with 18 grams of a 5% ointment, the resulting 240 gm would be:

A) 3.75%. B) 37.5%. C) 0.375%. D) 0.038%.

Shock patients who are not having difficulty breathing are placed head downhill because doing so:

a. increases perfusion to vital organs. b. increases the heart rate. c. increases blood pressure. d. decreases blood pressure.