Examlex
Morning light has no effect on retinal cells in resetting the circadian clock.
Arrhythmias
Arrhythmias are irregular heartbeats, which can be too fast, too slow, or erratic, disrupting normal heart rhythm and potentially leading to various health complications.
SA Node
The sinoatrial node, a group of cells in the right atrium of the heart that sets the pace for the heart rate by generating electrical impulses.
Spontaneous Depolarization
The self-initiated transition of a cell's membrane potential to a less negative value.
Cardiac Electrical Impulse
The electrical signals that stimulate the heart to contract, crucial for maintaining a consistent heart rhythm.
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