Examlex
In 1858,Darwin received a manuscript from Wallace in which Wallace proposed a theory very similar to his own.Darwin first presented his ideas in a joint paper with Wallace,which was read to the Linnaean Society,also in 1858.Why do you think history primarily associates Darwin's,not Wallace's,name with the theory of evolution?
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.
SA Node
Sinoatrial node, the heart’s natural pacemaker, located in the right atrium, responsible for setting the rate of heart beats by sending out electrical impulses.
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