Assertion: lymphatic system's vessel | /r/HasProperty | low-pressure conduits
Facets:
value: under normal conditions
type: TEMPORAL
Source sentences:
text: Under normal conditions, lymphatic vessels are low-pressure conduits and the same mechanism that promotes venous return in blood vessels acts here as well (the milking action of skeletal muscles, pressure changes in the thorax during breathing, and valves to prevent backflow).