What is the name of the indicated part of the EKG diagram?

The ability of the heart to beat is intrinsic or built in. 

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

Stenosis refers to leaky valves that do not close all the way. 

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

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

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.

According to _____, adolescents and emerging adults engage in high-risk behaviors in order to cope with their fear of death.

Mrs. Thomas has been diagnosed with terminal cancer, but insists that they will recover and believes that their laboratory results were mixed up or misinterpreted. Elisabeth Kübler-Ross would say that Mrs. Thomas is in the stage of: