Question

heartbeat is controlled by​

Answer 1

heartbeat is controlled by medulla oblongata

Answer 2

Answer:

__HAERT BEAT IS CONTROLLED ___

Explanation:

Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate.