Webster Dictionary(0.00 / 0 votes)Rate this definition: Melanin(noun) a black pigment found in the pigment-bearing cells of the skin (particularly in the skin of the negro), in the epithelial cells of the external layer of the retina (then called fuscin), in the outer layer of the choroid, and elsewhere. It is supposed to be derived from the decomposition of hemoglobin.
How to prepare your insulin dose if you are using two types of insulin: 1  When you mix regular insulin with another type of insulin, always draw the regular insulin into the syringe first. When you mix two types of insulins other than regular insulin, it does not matter in what order you draw them into the syringe.
The most common way to inject insulin is with a syringe. â¢ A syringe is a hollow plastic tube with a plunger inside and a short skinny needle. attached. â¢ Insulin is injected into the fatty tissue just under the skin. This is called a. subcutaneous tissue, or âsub-Qâ injection. Syringes come in different sizes. â¢ Each line on a 100-unit syringe marks 2 units of insulin. â¢ Each line on a 50-unit or 30-unit syringe marks 1 unit of insulin. â¢ Use a syringe large enough to hold the whole dose of insulin.