Examlex
The ________ of a solution is the negative logarithm of the hydrogen ion concentration expressed in moles per liter.
Cardiac Cycle
is the sequence of events that occurs in the heart from one heartbeat to the next, including contraction (systole) and relaxation (diastole) phases.
AV Node
A part of the heart's electrical system which acts as a gateway between the atria and ventricles, ensuring the timing of heartbeats.
Electrical Impulse
A sudden surge of energy in one direction, often used in the context of neurons firing and the transmission of signals through the nervous system.
Muscle Contraction
The process of generating tension within a muscle fiber through the actin and myosin filaments sliding past each other.
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