Which circuit carries blood to and from the lungs to pick up oxygen and drop off carbon dioxide?

1. Human circulation runs as two distinct but linked circuits. 2. The pulmonary circuit transports blood to and from the lungs, where it picks up oxygen and delivers carbon dioxide for exhalation. 3. The systemic circuit serves the rest of the body's tissues instead. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 19 "The Cardiovascular System: The Heart", section 19.1 Heart Anatomy_