Nerve signaling from the medulla oblongata controls heart rate via sympathetic nerves (noradrenaline, speeding up) and parasympathetic nerves (acetylcholine, slowing down).
Nerve signaling for heart rate control comes from the medulla oblongata; sympathetic nerves release noradrenaline to speed up the heart, while parasympathetic nerves release acetylcholine to slow it down.
| Front | nerve signalling to control heart rate |
|---|---|
| Back | autonomic control from the medulla oblongata - sympathetic nerve's noradenaline speeds, parasympathetic nerve's acetylcholine slows |
Tags: 6_2_blood_system
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