The arrangement of the autonomic nervous system in reptiles is
very much like that of mammals, although functional information
(especially) would benefit from more studies. Cranial autonomic
pathways have been demonstrated in cranial nerves III, VII, IX and X. It
is perhaps noteworthy, that a description of sympathetic chains in
snakes is wanting (for discussion, see Gibbins, 1994).
A general picture of the reptilian autonomic nervous system is
summarised in Fig. 7, and a good review is that of Berger and
Burnstock (1979).