Phlebotomy Technician Practice Exam (NCPT/CPT) 2025 – 400 Free Practice Questions to Pass the Exam

The respiratory system is responsible for the exchange of gases between the blood and the air. The digestive system is in charge of breaking down and absorbing nutrients from food and water. The nervous system controls impulses and communication between the brain and the body's organs and muscles. The conduction system, specifically the heart's electrical conduction system, is responsible for pushing blood from the heart to the cells. This system sends electrical signals that cause the heart muscles to contract, which in turn pumps blood throughout the body. None of the other options have this specific function of pushing blood and are therefore incorrect.