Which is a characteristic of lymph nodes? A They carry blood under great pressure

B They move fluids by means of a muscular pump

C They produce new red blood cells

D They contain phagocytic cells

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.