SURGICAL ANATOMY OF
FACIAL  NERVE
DR.S.HARIKA
Embryology
N of 2nd branchial arch3rd wk – fibro acoustic crest (DL aspect of hindbrain , cranial to otic placode)4th wk – Distinct FN
Cont…
5th wk – GG formed       – FN divides(main trunk & CT)7th wk – 5 brs appear in parotid bud8th wk – sulcus in post. Otic capsule(primitive FC)16th wk – neural commmunications wit facial muscles is complete