====== Petrosal nerve ======

[[Deep petrosal nerve]].

[[Superficial petrosal nerve]].


C2 (petrous): still surrounded by PGSNs. Ends at the posterior edge of the [[foramen lacerum]] (f- Lac) (inferomedial to the edge of the [[Gasserian ganglion]] in Meckel’s cave). Three divisions:

a) vertical segment: ICAascends then bends as the...

b) posterior loop: anterior to cochlea, bends antero-medially becoming the...

c) horizontal segment: deep and medial to greater and lesser superficial petrosal nerves, anterior to tympanic membrane (TM)