High blood pressure detected by baroreceptors leads to parasympathetic stimulation of the SAN via the medulla, slowing the heart rate to reduce pressure.
High blood pressure, detected by baroreceptors, triggers impulses to the medulla, which signals the SAN via parasympathetic nerves using acetylcholine, slowing the heart rate to normalize blood pressure.
| Front | High blood pressure |
|---|---|
| Back | Detected by baroreceptors Impulses sent to medulla which sends impulses along parasympathetic neurones. Acetycholine secreted which binds to receptors on SAN Heart rate slows down to reduced blood pressure back to normal |
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