More Than 100 Elements Are Currently Known

question 3

True/False

More than 100 elements are currently known.

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Definitions:

Relative Refractory Period

A phase following immediate action where a neuron is less responsive to stimulation and requires a stronger than normal impulse to activate.

Sodium

A chemical element (Na) that is a highly reactive metal and an essential nutrient for human health, particularly in nerve function and fluid balance.

Action Potentials

Short-lasting events in which the electrical membrane potential of a cell rapidly rises and falls.

Terminal Buttons

The small knobs at the end of an axon that release chemicals into the synapse to transmit signals to other neurons.