In Otto Loewi's Famous Experiment, Why Did the "Second" Frog

question 69

Multiple Choice

In Otto Loewi's famous experiment, why did the "second" frog heart slow down (the heart that had the nerves removed) ?

• A) Loewi caused change in the extracellular concentrations of ions around the heart.
• B) Acetylcholine was released, affecting the functions of the autonomic nervous system.
• C) The heart was dying.
• D) Norepinephrine was released, affecting the functions of the autonomic nervous system.

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