Examlex
Explain why the firm's short-run marginal cost curve initially decreases and then increases in most cases.
Hyperpolarization Period
A phase following the action potential in neurons where the inside of the cell becomes more negatively charged than the resting potential.
AV Period
The atrioventricular (AV) period refers to the phase of the cardiac cycle when the atria are contracting and pushing blood into the ventricles.
Ectopic Focus
Any pacemaker other than the sinus node of the heart; abnormal pacemaker; an ectopic pacemaker.
Ventricular Systole
Contraction of the ventricles.
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