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Neuroscience

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Applying Chemicals in Experiments

NEURO-PUHM7F

Chemicals with special properties are often used in neuroscience experiments for elucidation or simplification.

Read the following experimental cases and consider three chemicals listed here, tetrodotoxin (TTX), tetraethyl ammonium (TEA), and ouabain, which eliminate action potentials through different mechanisms.

Select the proper chemical needed in each case.

If you want to block the voltage-gated sodium channels to examine other channels, you need

.

If you want to block the voltage-gated potassium channels to study their role, you need

.

If you want to block the sodium-potassium pumps to simplify the system, you need

.