1. Explain the advantages and disadvantages of the syringe method of drawing blood as opposed to the evacuated system. 2. Blood tubes are evacuated. Explain what this means. 3. Why must unused blood...

1. Explain the advantages and disadvantages of the syringe method of drawing blood as opposed to the evacuated system.

2. Blood tubes are evacuated. Explain what this means.

3. Why must unused blood tubes be discarded when they expire?