Body & HealthFact

Your second circulatory system has no heart.

About 20 litres of fluid leak from blood capillaries into tissue each day; roughly 17 litres go straight back. The lymphatic system collects the remaining 3 litres or so. In humans it has no central pump: muscle contractions, the muscle cells of lymph vessels and one-way valves push lymph along.

Useful: Explains why legs swell after hours of standing still and settle again once you walk.

Source: en.wikipedia.org

BewegungKreislauf

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