Examlex
Why does one cycle of lunar phases take 29.53 days even though the moon orbits Earth in 27.32 days?
Action Potential
A temporary reversal of the electrical potential along the membrane of a nerve cell or muscle cell, allowing for the transmission of signals.
Cardiac Cycle
The complete sequence of events in the heart from the beginning of one heartbeat to the beginning of the next, including systole and diastole phases.
Diastole
The phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.
Heart Chambers
The four compartments of the heart including two atria and two ventricles, involved in pumping blood throughout the body.
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