Frog Heart Experiment
To examine the effects of pre-tension, temperature, and various drugs on the frog heart muscle,
speci cally contraction strength and heart rate.
There are a number of external in influences that can affect cardiac output. Some of these are mediated
by the autonomic nervous system (ANS) and other responses are due to temperature changes and ionic
concentrations. Some of the chemicals used in the lab are; caffeine, epinephrine, and cadmium chloride.