| Front | Parasympathetic innervation of the heart |
|---|---|
| Back | Structure: para/post neurons innervate myocardium near SA and AV nodes and coronary arteries Pathway: 1. Para/pre cell bodies in brain 2. Para/pre axons leave brain via vagus nerve 3. Travel into cardiac (splanchnic) vagus branches 4. Travel into cardiopulmonary plexus 5. Synapse with para/post cell bodies in ganglia 6. Para/post axons innervate heart surface and coronary vessels Function: 1. Decrease heart rate 2. Reduce force of contraction 3. Vasoconstrict coronary arteries |
Tags: cardiovascular
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