Anatomy of Cockroach

1: (b) Mesothorax, 2: (c) Metathorax, 3: (d) One pair from each part of thorax, 4: (a) 10, 5: (b) 7th, 8th and 9th sternites, 6: (d) Gizzard, 7: (a) Ileum, colon and rectum, 8: (b) Heart is composed of a series of muscle tubes, 9: (d) 10 pairs, 10: (a) 2 pairs