Describes an experiment that looks at the effects of chemicals on heart of a Daphnia.
Written in 2005; 815 words; 1 sources; MLA; $ 29.95
Paper Summary:
This paper describes an experiment, which stimulates the hearts of Daphnia by using caffeine, nicotine, epinephrine, ethyl, a diluted salt solution and various pH 10 solutions. The author reports measuring the heart rates of the Daphnia and discusses the changes in heart rate for each of the stimuli.
Table of Contents:
Materials and Methods
Result Analysis
Discussion
Graphs
From the Paper:
"Giving Nicotine to the second Daphnia, caused a drop in its heart rate (graph 2). Since nicotine is a widely used drug which is a depressant, it lowers the beating of the Daphnia heart. The Daphnia that acquired epinephrine, experienced a jump in heart rate (graph 3). Epinephrine, otherwise know as adrenaline, is secreted by the adrenal medulla in response to stress. It stimulates autonomic nerve action, which is why a rise is heart rate was observed."
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