- #1
Asmaa Mohammad
- 182
- 7
Hello,
In my textbook, I read that the preganglionic fibers which supply the thoracic viscera originate in the lateral horn of the upper 4 thoracic segments.
I read too that the the preganglionic fibers which supply the head and neck originate in the lateral horn of the first and second thoracic segments.
What I don't understand is how would the preganglionic fibers of the first and second thoracic segments (i.e. T1 and T2) supply both the region of the thoracic and the region of head & neck?
In my textbook, I read that the preganglionic fibers which supply the thoracic viscera originate in the lateral horn of the upper 4 thoracic segments.
I read too that the the preganglionic fibers which supply the head and neck originate in the lateral horn of the first and second thoracic segments.
What I don't understand is how would the preganglionic fibers of the first and second thoracic segments (i.e. T1 and T2) supply both the region of the thoracic and the region of head & neck?