A
and
B, Changes in the diameter of pressurized (80 mm Hg, 34–35°C) skeletal muscle arterioles from WT and TRPV1-null mice treated with the PLC inhibitor, U73122 (10 μM, n = 4), the inactive analog, U73343 (10 μM, n = 4), nifedipine (5 μM, n = 3) and the PKC inhibitor, GF 109203X (n = 4, nested one-way ANOVA), C, Proposed signaling cascade for the generation of TRPV1-dependent myogenic tone in skeletal muscle arterioles.