Which of the labeled structures in the diagram of the heart action potential conduction system is the bundle of His? 
Definitions:
Metabolic Rates
The rate at which the body burns calories to maintain basic bodily functions, such as breathing and digestion.
Government Definitions
Established meanings ascribed to terms and concepts by governmental bodies, which may differ from colloquial or industry-specific interpretations.
Poverty
A state or condition in which a person or community lacks the financial resources and essentials for a minimum standard of living.
Distribution Of Income
The way in which total income is shared amongst the members of a society, reflecting the level of economic inequality.
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