Anatomy True about Thoracic pa of sympathetic trunk: A The first five ganglia give preganglionic fibers B The sympathetic trunk has 13 segmentally arranged ganglia C It is the most medially placed structure in the mediastinum D The first ganglion is often fused with the inferior cervical ganglion to form the stellate ganglion 💡 Explanation True about Thoracic pa of sympathetic trunk: ✓ Correct Answer: D. The first ganglion is often fused with the inferior cervical ganglion to form the stellate ganglion