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they used their fingers and arms legs sticks and bones
the bones in your legs and arms
They're called long bones.
At the end of first trimester the embryo its is all organy and extremitys are formed.After this period baby take weight and more changes are seen in organs like brain.
You use your arms and legs driven by your muscles and bones.
Blood Cells.
arms legs
You are thinking of the arms and legs which are called the extremities.
The arm and leg bones keep your arms and legs straight
arms and leg bone help support our daily life
flat bones long bones short bones and irregal bones
Shoulders, arms, hips, legs - 126 bones