How does the lymph move?

[TheVirus]

What makes the lymph move? I assume it doesn't have a muscle that pumps it, like the heart for the blood, so how can it circulate?

[Darby]

It doesn't circulate, it's a one-way drainage system. There doesn't seem to be a direct movement mechanism, but the vessels have anti-backflow valves and tend to move through tissues that squeeze them (veins have a similar mechanism), promoting flow from the drained tissues to the veins that receive the drained fluid.

[TheVirus]

Oh, so they are pushed by the contraction of the body muscles, like the veins, right?

[jwalin]

yeah

10 points to you

[TheVirus]

Yeepee!