Following up to Mika

The growling does not come from the stomach, it comes from the
intestine. The intestine contracts to move materials. If there is a
certain proportion of liquid or gas (as is the case if you have not
eaten) the contractions generate the sound that is noticed as 'stomach
growling'.

now I can impress my dentist!
--
Mike Reid
"Art is the lie that reveals the truth" P.Picasso
UK walking "http://www.fellwalk.co.uk" -- you can email us@ this site
Spain,cuisines and walking "http://www.fell-walker.co.uk" -- dontuse@ all, it's a spamtrap