| Front | Parasympathetic pathway details |
|---|---|
| Back | Post-ganglionic axons only innervate viscera (except for arteries of penis and clitoris, and smooth muscle of pupil). In order to innervate thoracic viscera: 1. Preganglionic axons travel through the vagus nerve, which branches off the brainstem (where the preganglionic cell bodies are located) 2. Vagus descends through the neck and enters the thorax and into the abdominal cavity. 3. Axons can split off from the vagus in splanchic nerves to reach various parasympathetic ganglia near target organs. |
Tags: ans
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