Capillary Exchange Dynamics

00:00 1 marks

27. The diagram shows where the exchange of substances between blood and tissue fluid occurs in a capillary bed. What explains the movement of solutes between blood and tissue fluid at region X?
[VISUALIZATION: Diagram of capillary bed. Region X is the arteriole end.]

A

Blood plasma has a higher concentration of solutes than tissue fluid.
B

Tissue fluid has a more negative water potential than blood plasma.
C

Hydrostatic pressure is higher in blood than in tissue fluid.
D

The permeability of capillary walls is highest at region X.

Hint Hint

Hint

Focus on the primary force that pushes fluid and dissolved solutes *out* of the capillary into the surrounding tissue at the beginning of the capillary bed (arteriole end).

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Complete Answer

C. Hydrostatic pressure is higher in blood than in tissue fluid.

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