The Arcuate Line or the Douglas' Line is a line, indicating the lower limit of the Rectus Sheath. This video provides the detailed anatomy of the arcuate line. Timeline: 00:00 Introduction 03:30 The word 'Arcuatum' 04:20 Layers of Muscles 04:40 External Oblique Muscle 04:47 Internal oblique Muscle 05:55 Rectus Abdominis 06:40 Linea Alba