-- card: 6900 from stack: in -- bmap block id: 25148 -- flags: 0000 -- background id: 2564 -- name: -- part contents for background part 1 ----- text ----- The largest organ of the human body is the skin and the largest muscle is the buttock. -- part contents for background part 2 ----- text ----- Diamond is the best thermal conductor known on earth as well as being the hardest material.