Heartbeat is controlled by
nerves only
enzymes only
hormones only
both nerves and hormones
The correct option is D.\
Explanation for correct option:
Final answer: Heartbeat is controlled by both nerves and hormones.
Medulla oblongata controls all the involuntary activities like heartbeat, respiration, etc.
What is meant by heartbeat? What is the usual heartbeat?
This part of brain controls heartbeat