Figure 10

Octopamine, but not tyramine, increases the amplitude of peritoneal sheath contractions. Data from preparations in which the uterus and spermathecae were removed to avoid mechanical coupling. Data recorded as mean square difference in intensity, with the average height of a peak calculated for each preparation. Control: N = 41 peaks; wash N = 27; 1 μM tyramine N = 10; 10 nM octopamine N = 7. Unpaired t-tests were used to compare drug treatments, with * used to indicate P < 0.05.