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When Na+ gates open in a cardiac muscle cell, Ca2+ also enters the cell. 

Excess calcium released within the cardiac muscle cells help to prolong the depolarization creating a plateau. 

Match the structures of the intrinsic conductoin system to the correct structures.

At no time during the cardiac cycle are all four valves closed. 

Great companies go beyond basic strategy to a very focused approach; Collins calls this  ______.

The discussion of failure openly without pointing who made the mistake is referred to as ______: 

Susan, a manager at ABC International, focuses on authority and obedience, delegates little, and acts in a unilateral command-and-control fashion. Susan can be described as a(n) __________ leader.

A person with which condition is considered dead?

When elders focus on trying to leave something meaningful behind for later generations, they are engaged in:

Which statement about older adults who think they may die soon is TRUE?