I thought lats were in the back and couldn't be seen (in the mirror I can see this portion and I don't mean outer chest or seratus) (chestsculpting.com)
This free workout plan targets not only the upper and lower pecs, but also the inner and outer chest muscles as well. (build-muscle-and-burn-fat.com)
«Hiccups are normal involuntary spasmodic contractions of the muscles of the inner and outer chest. (care.com)