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Enlargement of the Thyroid Gland

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Enlargement of the thyroid gland:


Definitions:

Resting Membrane Potential

The electrical charge difference across the cell membrane when the cell is not actively transmitting signals, typically around -70mV for neurons.

Local Potential

Depolarization that is not propagated and that is graded or proportional to the strength of the stimulus.

Summate

To add together or accumulate to a total; in physiology, refers to the additive effect of repeated stimuli on a nerve or muscle.

Gray Matter

Regions of the brain and spinal cord with a high concentration of cell bodies, dendrites, and axon terminals of neurons, distinguished from white matter.

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