1. Which two major body systems help regulate acid-base balance in the body? Provide an example of how each of these systems accomplishes this task. 

2. After checking  patients identification and reviewing the orders for the blood transfusion, you need to start  blood transfusion. What are the steps in the blood verification process? Explain the rationale for this procedure. 

3. How does the respiratory system provide oxygen to the body? 
(FYI a total of 3 paragraph only. each question ,one paragraph.