Question

Normal activities of the human heart are regulated:1. Intrinsically 2. By the autonomic nervous system 3. By the brain stem 4. By the diencephalon.

Answer 1

HEY MATE YOUR ANSWER IS

The autonomic nervous system regulates the functions of our internal organs (the viscera) such as the heart, stomach and intestines. 

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Answer 2

by the brain stem because it is involuntary action so it is control by hind brain