The skeleton (from Greek σκελετός, skeletós "dried up") is the body part that forms the supporting structure of an organism. There are two different skeletal types: the exoskeleton, which is the stable outer shell of an organism, and the endoskeleton, which forms the support structure inside the body. There are also two other forms of skeleton referred to, the hydroskeleton and the cytoskeleton.

"Good judgement seeks balance and progress. Lack of it eventually finds imbalance and frustration."
President Eisenhower
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