Q: What is the movement of fluid out of the capillaries called?


Read this paragraph and choose the correct option from the provided answers:

20.3 Capillary Exchange Small molecules can cross into and out of capillaries via simple or facilitated diffusion. Some large molecules can cross in vesicles or through clefts, fenestrations, or gaps between cells in capillary walls. However, the bulk flow of capillary and tissue fluid occurs via filtration and reabsorption. Filtration, the movement of fluid out of the capillaries, is driven by the CHP. Reabsorption, the influx of tissue fluid into the capillaries, is driven by the BCOP. Filtration predominates in the arterial end of the capillary; in the middle section, the opposing pressures are virtually identical so there is no net exchange,.

 Choices:

- diffusion

- absorption

- osmosis

- filtration


A:
filtration