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If the heart of a frog was placed in a petri dish filled with oxygenated Ringer's solution, what other chemical would be essential to make it contract? A. Norepinephrine B.…

If the heart of a frog was placed in a petri dish filled with oxygenated Ringer's solution, what other chemical would be essential to make it contract? A. Norepinephrine B.…
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If the heart of a frog was placed in a petri dish filled with oxygenated Ringer's solution, what other chemical would be essential to make it contract? A. Norepinephrine B. Acetylcholine C. Serotonin D. None

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User Brushtakopo
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Answer: D

Step-by-step explanation:

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User Pallie
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