The humerus is a long bone that runs from the shoulder to the elbow.The arms (not including the hands) consist of three bones: They protect the lungs, heart, and other organs of the thorax (chest). The ribs surround the chest, letting the lungs expand for breathing. The ribs are long curved bones which form the rib cage.Scapula (shoulder blades) connect the humerus (upper arm bone) with the clavicle (collar bone).

Sternum (breastbone) is a long flat bony plate in the center of the chest and connects to the upper ribs.

Clavicles (collar bones) which are found in the upper chest and connect the scapula and the sternum.

The thorax (chest) includes a number of different bones. The upper part of the sacrum connects with the last lumbar vertebra, and its lower part connects with the coccyx (tailbone).

The sacrum is a large, triangular bone at the base of the spine and connects the spine with the pelvis (hip bones).

The lumbar vertebrae help support the weight of the body, and permit movement. There are 5 lumbar vertebrae between the ribs and the pelvis.

Lumbar vertebrae are the lower part of the spine.

There are 12 thoracic vertebrae, and each connects to a rib.

Thoracic vertebrae compose the middle part of the spine.

Cervical vertebrae are those right below the skull.

It also protects the spinal cord (nerves that go from the brain to other parts of the body) and allows flexible movement.

The spine is made up of many vertebrae and provides the main central support for the human body.

Is the sacrum a flat bone