How does the cardiovascular system differ from the lymphatic system?

The cardiovascular system is characterized by its closed circuit system that includes the heart, blood vessels, and blood. It is responsible for pumping blood throughout the body to deliver oxygen and nutrients to tissues, as well as to collect waste products. This pumping action is crucial for maintaining blood circulation and pressure, which are essential for the body's overall function.

In contrast, the lymphatic system does not possess a central pump like the heart. Instead, it relies on the movement of skeletal muscles, respiration, and other body movements to help propel lymph fluid through lymph vessels. This system primarily focuses on transporting lymph, which is a clear fluid that carries white blood cells and plays a vital role in immune function as well as fluid balance.

Understanding this distinction highlights the fundamental difference between these two systems, reinforcing why the presence of a pump in the cardiovascular system is a key differentiator. The other options do not accurately represent the main differences between these two systems, especially regarding their structure and function.