Questions on Bionicle Anatomy

[Jowm]

You may find this discussion already begun at:

BIONICLE G1 Biology

So, I’ve been wondering about the biology of the MU inhabitants. I wanted to discuss this with you guys, as it’s very interesting. Anyways, I was wondering what the purpose of the lungs in the bio-mechanical bodies was, as Farshtey has said, there is organic tissue, but the team has never considered it “muscle mass.” Also, there is, as far as I can tell, no circulatory system inside the beings to transport Oxygen and shizz to the organic tissue. Also, wtf’s the purpose of the organic tissue, if it’s not muscle? Discuss at your leisure.