anatomy

• Git epithelium columnar
• Mucosa (epithelium) submucosa (connective tissue, submucosal plexus for secretion) musculosa (inner circular smooth, sandwiched myenteric plexus for motility, outer longitudinal) Serosa (connective tissue)
• Aponeuroses is pearly white connective tissue that replaces the tendons in flat muscle
• There is additional investing fascia (superficial, intermediate + deep layers that cover 3 muscle layers of anterolateral wall) and endoabdominal fascia (lines internal abdo wall eg transversalis fascia)