Final answer:
When mixing insulins, clear or rapid-acting insulin is drawn into the syringe first, followed by the cloudy or long-acting insulin, to avoid contamination. Insulin injections decrease blood glucose levels by helping to transport and store glucose in cells after meals.
Step-by-step explanation:
When mixing insulins, it's important to follow the proper procedure to ensure the efficacy of the insulin injections. Typically, you would draw up the clear or rapid-acting insulin first, followed by the cloudy or long-acting insulin. The reason for this sequence is to prevent contamination of the short-acting insulin with the long-acting one, which could affect how quickly the insulin takes effect.
In reference to insulin injections and their functions: Insulin injections do not increase blood glucose levels before a meal. Instead, insulin helps to decrease blood glucose levels by facilitating the transport and storage of glucose into cells, particularly after consuming a meal high in glucose. This process helps to prevent hyperglycemia, which is an elevated blood glucose level.