The hormone that stimulates heart beat is

The hormone that stimulates heart beat is

(1) Thyroxine 
(2) Gastrin
(3) Glycogen 
(4) Dopamine

Answer: (1) Thyroxine 

Explanation:
  • Thyroxine is the primary chemical emitted into the circulation system by the thyroid organ. It assumes indispensable parts in assimilation, heart and muscle work, mental health and upkeep of bones. 
  • It expands pulse, heart contractility and cardiovascular yield and furthermore advances vasodilation, which prompts improved blood stream to numerous organs.

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