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Blood production

Bone marrow is the flexible tissue found in the interior of bones. In humans, marrow in large bones produces new blood cells. It constitutes 4% of the total body weight of humans. The new blood cells are released into the body and go through the arteries and veins to the heart to get oxygenated from the air we breathe in, that's why blood is red because it has been oxygenated but when it hasn't it is blue.

Movement

The joints between bones allow movement, some allowing a wider amount of movement than others, e.g. the ball and socket joint allows a greater amount of movement than the pivot joint at the neck. Movement is powered by skeletal muscles, which are attached to the skeleton at various parts on bones. Muscles, bones, and joints provide the basic needs for movement, all coordinated by the nervous system.

Support

The skeleton provides the framework which supports the body and maintains its shape. The pelvis and associated ligaments and muscles provide a floor for the pelvic structures. Without the ribs, coastal cartilages, and the intercostal muscles the heart would collapse.

the skeleton also provides shape and protection to vital organs....

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14y ago

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