Question

Heartbeat is controlled by

Answer 1

diaphragm and elaborate control heartbeat

Answer 2

Answer :-

Heartbeat is controlled by the "Sympathetic" and "Parasympathetic" nervous systems.

Extra Information :-

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• The heart of an average adult human being beats at the rate of 72 to 80 beats per minute (bpm) in resting condition.

• The rate of heartbeat is controlled by the "Autonomous nervous system".

• Sympathetic nerves are accelerator nerves, which increase the rate of heartbeat by secreting "Noradrenaline".

• Stimulation of the parasympathetic nervous system (vagus supply) decreases the rate of heartbeat by secreting "Acetylcholine".

• Thyroid hormone also enhances cardiac contractility and increases the rate of heartbeat.

• Elevated levels of Potassium (K+) or Sodium (Na+) in the blood results in the decrease of the rate of heartbeat.