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Your skeleton provides the internal supporting structure of the body. The adult axial skeleton consists of 80 bones that form the head and body trunk. Attached to this are the limbs, whose 126 bones...

The appendicular skeleton includes all of the limb bones, plus the bones that unite each limb with the axial skeleton (Picture 1). The bones that attach each upper limb to the axial skeleton form...

Lumbar vertebrae carry the greatest amount of body weight and are thus characterized by the large size and thickness of the vertebral body. They have short transverse processes and a short, blunt...

The thoracic cage (rib cage) forms the thorax (chest) portion of the body. It consists of the 12 pairs of ribs with their costal cartilages and the sternum. The ribs are anchored posteriorly to the...

Each rib is a curved, flattened bone that contributes to the wall of the thorax. The ribs articulate posteriorly with the T1–T12 thoracic vertebrae, and most attach anteriorly via their costal...

The vertebral column is also known as the spinal column or spine. It consists of a sequence of vertebrae (singular = vertebra), each of which is separated and united by an intervertebral disc....

The bodies of the thoracic vertebrae are larger than those of cervical vertebrae (Picture 1). The characteristic feature for a typical midthoracic vertebra is the spinous process, which is long and...

Typical cervical vertebrae, such as C4 or C5, have several characteristic features that differentiate them from thoracic or lumbar vertebrae (Picture 1) (See [[Vertebra]] for the general common...