<prompt> Floor of Petit triangle is formed by?SacrospinalisInternal obliqueRectus abdominisFascia Transversalis  <response>: Ans. is b i.e., Internal oblique Boundaries of Petit triangle inferior lumbar triangle are?Base - Iliac crestAnterior boundary abdominal boundary - Posterior border of external oblique muscle.Posterior boundary lumbar boundary - Anterior border of latissimus dorsi.Floor is formed by internal oblique muscle. 