When Otto Loewi Collected the Fluid from Synapses That Were

question 139

Multiple Choice

When Otto Loewi collected the fluid from synapses that were involved in slowing a frog's heart, then injected it near the heart of a second frog, he demonstrated that

• A) neurotransmitters which are inhibitory can also be excitatory.
• B) at least some neurons communicate by releasing chemicals.
• C) neurons do NOT communicate by releasing chemicals.
• D) communication between a neuron and a muscle is very different than that between two neurons.

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