Which of the following is a limb bone?

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Multiple Choice

Which of the following is a limb bone?

A limb bone is one that belongs to the arms or legs. The femur fits this idea perfectly because it is the thigh bone in the leg, a long bone that bears body weight and enables strong movement. It has a proximal head that fits into the hip socket and a distal end that forms part of the knee joint, with a thick shaft designed for strength. The skull is part of the axial skeleton, not a limb. The pelvis forms the pelvic girdle, which connects the legs to the trunk but isn’t itself a limb bone. The clavicle (collarbone) is part of the shoulder girdle, anchoring the upper limb to the trunk. So the femur is the limb bone among these options.

A limb bone is one that belongs to the arms or legs. The femur fits this idea perfectly because it is the thigh bone in the leg, a long bone that bears body weight and enables strong movement. It has a proximal head that fits into the hip socket and a distal end that forms part of the knee joint, with a thick shaft designed for strength.

The skull is part of the axial skeleton, not a limb. The pelvis forms the pelvic girdle, which connects the legs to the trunk but isn’t itself a limb bone. The clavicle (collarbone) is part of the shoulder girdle, anchoring the upper limb to the trunk. So the femur is the limb bone among these options.

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