R Rebekahwithak Guest Jan 11, 2009 #2 http://faculty.jeffstateonline.com/cvenglarik/Bio%20202/lab/respandigest.htm here's a pic of a human stomach model.. maybe it will help third pic on top
http://faculty.jeffstateonline.com/cvenglarik/Bio%20202/lab/respandigest.htm here's a pic of a human stomach model.. maybe it will help third pic on top