Choosing a whole row in a mesh?

Ok, I am modeling a vehicle and I want my mesh to look nice at its completion. So I want to be able to select all the vertices in a single row without having to push the b key (which seems to select all the wrong vertices in the first place), anyways I know this can be done I just can’t remember which key it is.

3dak

Alt-RMB on an edge in the row

GreyBeard

thanks for the reply