Fluid balance is studied in a blood-perfused muscle preparation with an
intact lymphatic system from an experimental animal. After a control period
during which all
parameters are normal, increasing which of the following is most likely to
increase the rate of lymph flow without affecting the protein content of the
lymph?
A) Capillary colloid osmotic pressure
B) Capillary hydrostatic pressure
C) Constriction of precapillary sphincters
D) Endothelial transcytosis
E) Width of junctions between endothelial cells
