Tissue Fluid Flashcards

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1
Q

what is Tissue fluid?

A
  • The liquid that surrounds the cells in a capillary bed
  • It is the medium through which oxygen and carbon dioxide are exchanged between the blood and respiring cells
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2
Q

where is Tissue fluid formed?

A

It is formed at the arterial end of the capillary beds and reabsorbed at the venous end

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3
Q

How is hydro static pressure created?

A
  • Is the pressure exerted by the blood pushing against the vessel wall.
  • Created by the contraction of the muscular walls of the ventricles during ventricular systole.
  • Measured in millimetres of mercury
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4
Q

How is oncotic pressure created?

A
  • Blood Contains large amounts of dissolved proteins called plasma proteins
  • Main type of abulmins
  • function is to create oncotic pressure
  • Oncotic pressure is the pressure of proteins pulling water towards them
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5
Q

How is Tissue Fluid is formed?

A
  • Hydrostatic pressure is higher in the blood than in the tissue fluid
  • water and small molecules are forced out e..g oxygen, sodium, glucose
  • large molecules stay inside the capillary e.g. proteins
  • pressure drops as you move along the capillary bed because water moves out.
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6
Q

How is Tissue Fluid is returned?

A
  • Water potential in the blood becomes lower than the water potential in the Tissue Fluid
  • Becuase the proteins remain in the blood
  • Water moves into the capillary by osmosis
  • Hydrostatic Pressure drops in capillary
  • water moves in down pressure gradient
  • Tissue Fluid drains into the lymph
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