Biology Question & Answers
The rate of heartbeat is accelerated by the hormone
|A) adrenaline||B) acetylcholine|
|C) thyroxine||D) pituitrin|
The hormone adrenaline also called epinephrine is known as a stress hormone. In emotional upsets( like fear, anger etc.) this hormone is poured into the blood and it accelerates heart beat. The hormone acetylcholine decelerates heartbeat rate.
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