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Figure 3 | BMC Physiology

Figure 3

From: Sinoatrial tissue of crucian carp heart has only negative contractile responses to autonomic agonists

Figure 3

CCh shortens atrial action potential duration. The bars show duration of atrial action potential (APD50%) of the crucian carp heart at 50% of repolarization level in the presence of 3·10-8 and 1·10-7 M CCh. The inset shows representative action potential recordings from the warm-acclimated fish heart. The results are means of 10-15 stable impalements from 5 and 3 hearts for CA and WA fish, respectively. Asterisks (**) indicate a statistically significant difference (P < 0.01) from the value in the absence of CCh.

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BMC Physiology

ISSN: 1472-6793

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