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. 1999 Jan 1;514(Pt 1):229–243. doi: 10.1111/j.1469-7793.1999.229af.x

Figure 10. Effect of nifedipine on membrane potential and tension responses to PGF and K+-free solution in term human uterine smooth muscle.

Figure 10

The PGF-dependent hyperpolarization and that which followed restoration of 6 mM K+ following perfusion in K+-free solution were similar in amplitude and time course (upper traces). Nifedipine (lower traces) abolished all action potential activity, revealed the depolarization evoked by PGF and by perfusion with K+-free solution, all but abolished PG-induced increases in tension and markedly attenuated the hyperpolarizations. All responses in the same cell.