The adult human skeletal system consists ... which means “without backbone.” Osteoporosis is a disease that cases loss of bone tissue. Bones lose calcium and become thin and brittle.

This article looks at the anatomy of the back, including bones, muscles, and nerves. It also covers some common conditions and injuries that can affect the back. The back comprises the spine and ...

The human skeletal ... consists of 80 bones. It’s made up of the bones that form the vertical axis of the body, such as the bones of the head, neck, chest, and spine. The hyoid is a U-shaped ...

The spine gives human beings their posture and houses and protects the spinal column, the body’s major nerve center. The female pelvic bones are typically larger and broader than a male’s.

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