Anatomy
·Thorax & Spine
Sympathetic Trunk & Splanchnic Nerves
⭐ PREMIUM
The thoracic sympathetic chain and its splanchnic branches carry sympathetic fibres to the abdomen — and explain Horner syndrome.
SYMPATHETIC TRUNK
• Paravertebral ganglia along the necks of the ribs.
• Splanchnic nerves (preganglionic, pierce the diaphragm to abdominal prevertebral ganglia): greater (T5–9 → coeliac ganglion), lesser (T10–11 → superior mesenteric/aorticorenal), least (T12 → ren…
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