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Unformatted text preview: BIOL 2161, April 1, 2010 Acetylcholine and Epinephrine Introduction: Acetylcholine and Epinephrine are neurotransmitters of the autonomic nervous system that are produced in the human body. Acetylcholine is secreted from the parasympathetic nerves, and Epinephrine is secreted from the adrenal medulla. In this experiment, a frog was used to test whether or not Acetylcholine and Epinephrine have any effects on the heart. Question 1: Will Acetylcholine have any effect on the frog’s heart? H(o): No H(a): Yes Question 2: Will Epinephrine have any effect on the frog’s heart? H(o): Yes H(a): No Methods: • Bullfrog (destroyed by decapitation) • Ringer’s solution • Pen Writer • 1/1000 solution of Epinephrine • 1/50 solution of Acetylcholine In the video, the bullfrog was hooked to a pen writer, with its ventral body cavity exposed so the heart could be seen beating, to record the force of contraction and the heart rate of the frog’s heart. To keep the frog’s heart beating, the heart was kept moist by heart rate of the frog’s heart....
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This note was uploaded on 05/18/2011 for the course PHYS 1202 taught by Professor Staff during the Fall '08 term at LSU.
- Fall '08