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A-Level Biology OCR A

Oncotic Capillaries Pressure Blood Potential Water Surrounding Fluid

Front Describe how oncotic pressure in capillaries is produced.
Back Oncotic pressure:
  • Plasma proteins give blood in capillaries a high solute potential and a low water potential compared to surrounding fluid
  • As result - water has tendency to move into blood vessels in capillaries from surrounding fluid by osmosis - oncotic pressure

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