Which of the following is/are TRUE regarding the molecular mechanism of "sensitization" in Aplysia, shown by the gill-withdrawal reflex?
a. The L7 neuron releases 5HT, and this ultimately leads to high levels of Ca2+ entry into the sensory neurons.
b. The L29 neuron releases 5HT, and this ultimately leads to high levels of Ca2+ entry into the sensory neurons.
c. The L29 neuron releases dopamine, and this ultimately leads to high levels of Na+ entry into
the sensory neurons
d. None of the above
Answer: b. The L29 neuron releases 5HT, and this ultimately leads to high levels of Ca2+ entry into the sensory neurons.
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