1 the bone structure, consisting of several small bones, that runs down the length of the back and provides the overall support for the upper body and protects the main nerve cord that relays responses from the rest of the body to the brain
2 the upper bone of the leg found between the hip and knee
3 the organs of the human body responsible for filtering waste out of the blood and regulating water and electrolyte balance
4 the organ of the human body responsible for controlling the activities of other organs and body functions, interpreting information received from nerves, and responsible for thought, memory, and emotions
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5. the organ of the human body responsible for pumping and maintaining the flow of blood throughout the body
6. the individual small bones that form the spine
7. the fluid that is circulated throughout the body delivering oxygen and nutrients, and carrying waste to the kidneys
8. the hard, porous individual pieces of a skeleton that support and protect organs
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