Which of these is disorder of the muscular system?ACrohn’s DiseaseBCeliac DiseaseCMyasthenia gravisDGastroenteritisAnswer: C. Myasthenia gravis Read Explanation: Myasthenia gravis is an autoimmune disorder of the muscular system which affects neuromuscular junctions. Crohn’s Disease, Celiac Disease and gastroenteritis are disorders of the digestive system. Read more in App