Explain the conducting system of the heart

The conducting system of the heart consists of cardiac muscle cells and conducting fibers (not nervous tissue) that are specialized for initiating impulses and conducting them rapidly through the heart (see the image below). They initiate the normal cardiac cycle and coordinate the contractions of cardiac chambers. Both atria contract together, as do the ventricles, but atrial contraction occurs first.
The conducting system provides the heart its automatic rhythmic beat. For the heart to pump efficiently and the systemic and pulmonary circulations to operate in synchrony, the events in the cardiac cycle must be coordinated.

T.j. is struggling with whether or not it is worth trying to quit his prescription drug abuse. he used to be dedicated to his family and friends, but he worries that his abuse has driven away everyone who cares about him so there is no point in quitting. what long-term benefits can you use to try to motivate him to make the effort to quit? (3 points) improved healthy cholesterol levels leading to decreased chance of heart disease improved relationship stability and better ability to handle stress or depression increased stress levels and better chances of making and keeping friends increased blood glucose levels and less chance of developing type 2 diabetes