Examlex
How is the denotative meaning of a word different from its connotative meaning?
QRS Complex
A series of three deflections in an electrocardiogram (ECG) representing the depolarization of the heart's ventricles before contraction.
Electrocardiogram
An Electrocardiogram (ECG) is a test that records the electrical activity of the heart to detect heart problems and monitor the heart's status.
Depolarization
The process by which a cell's resting membrane potential becomes less negative, leading to an action potential and potentially initiating a nerve impulse.
Atria
The heart's top two chambers that take in blood from the veins and transfer it to the ventricles.
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