If Anna Garcia had a problem with her brain, which is in her nervous system, then it can affect the the, which is in the circulatory system. Even if one body system doesn't seem relayed to another, they will still effect each other if there's a problem in one. Like, for example, the skeletal system relies on Annas urinary system to remove waste produced by bone cells; in return, the bones in Annas skeleton creates structure that protects your bladder and other urinary system organs. Annas circulatory system delivers oxygen-rich blood to Annas bones. Meanwhile, Annas bones are busy making new blood cells.
