What bone help bear the wait of the body?

Answer 1

There are many bones in the human body which provide support/bear the weight of the body against gravity. Essentially, the most important thing to understand is that the weight of the body is supported via many regions of the skeletal system, systematically. (pressure progressively heightens as you move further down the body, and therefore you will notice that the bones of the lower limb are by far the most supportive in terms of weight bearing)

The bones of the vertebral column provide support for upper limb, where these bones become progressively larger and larger as you look down this set of bones. (lumbar region vertebrae are much thicker then that of the cervical and thoracic vertebrae).

The vertebrae is then connected to the pelvis bones and then further onto the lower limb bones (femur and tibia, the fibula only provides stability for the tibia and the ankle joint). The tibia and femur contain specific stress lines within the internal spongy bone, which provide support for the individual bones. (these lines provide the bones with some form of elasticity etc.) The most important think to realise is that the bones themselves are useless without supportive connective tissues connecting them to other supportive and postural bones, ligaments and muscles. I cant be bothered writing any more. I've basically explained it all.