The pulmonary vasculature contains

The pulmonary vasculature contains arteries and arterioles, which branch in the lungs to create a dense capillary bed to provide blood flow. The pulmonary capillary bed is a high-volume, low-pressure,
low-resistance system that delivers blood to and from the lungs via the arterial and venous circulation systems, respectively. In a normal healthy adult, this system has a mean pulmonary artery pressure
(MPAP) that ranges from 12 to 16 mmHg.