Preganglionic neurons develop from (a) neural crest cells, (b) neural tube cells, (c) alar plate cells, (d) endoderm. The white rami communicantes contain what kind of fibers? (a) preganglionic...

Preganglionic neurons develop from

(a) neural crest cells,

(b) neural tube cells,

(c) alar plate cells,

(d) endoderm.

The white rami communicantes contain what kind of fibers?

(a) preganglionic parasympathetic,

(b) postganglionic parasympathetic,

(c) preganglionic sympathetic,

(d) postganglionic sympathetic.