The accelerator nerve (sympathetic) links the medulla's sympathetic center to the heart's SAN to increase heart rate, while the vagus nerve (parasympathetic) links the parasympathetic center to the SAN to decrease heart rate.
El nervio acelerador (simpático) y el nervio vago (parasimpático) viajan desde los centros del bulbo raquídeo hasta el nodo sinoauricular (SA) del corazón, para aumentar y disminuir la frecuencia cardíaca, respectivamente.
| Front | Name the two nerves that travel from brain to SAN, state which centre they come from and state what each does. |
|---|---|
| Back | Nerves connected to SAN:
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