The rate of heartbeat is accelerated by the hormone
A. Adrenaline
B. Acetylcholine
C. Thyroxine
D. Pituitrin
Answer: Option A
Solution(By Examveda Team)
The rate of heartbeat is accelerated by the hormone. 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.This Question Belongs to General Knowledge >> Biology
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