In cells, structures called Golgi Bodies (also known as Golgi apparatus or Golgi complex) are stacks of membrane-covered sacs that package and move proteins to the outside of the cell.
Pulsus alternans is a physical finding with arterial pulse waveform showing alternating strong and weak beats.
These are all portions of the Purkinje system. Pick one of the matches and predict the path the impulse (fire) would follow. Perhaps can now imagine why impulses that originate in the ventricles produce wide QRS complexes. In a normal sinus beat, the impulse forks at the bundle of His. It covers both ventricles simultaneously. It generally depolarizes the ventricles in less than 0.10 seconds.