6Chapter 6: Professor Pancreas’s Sugar Station
19Chapter 19: The Kidney Keepers
7Chapter 7: Bone Bastion
20Chapter 20: The Immune Guardians
8Chapter 8: Muscle Movement Mysteries
21Chapter 21: The Endocrine Enigma
9Chapter 9: The Heart of Coordination
22Chapter 22: The Bone Bastion
10Chapter 10: The Circulatory Symphony
23Chapter 24: The Nervous Network
11Chapter 11: The Immune Defenders
24Chapter 25: The Wisdom of the Whole
12Chapter 12: The Renal Guardians
25END
13Chapter 13: The Endocrine Enigma
