Making it more understandable to non-specialists.

edit

The word "rostrally" is used in the first line but has no useful definition in Wiktionary.

Thanks for your comment, David R. Ingham. See Anatomical terms of location for more details. I've tried to simplify the lead, hope that helps. Cheers, --Tom (LT) (talk) 01:53, 26 May 2015 (UTC)Reply