Define bone?

A bone is a rigid organ that forms part of the endoskeleton of vertebrates. It provides structural support and protection for the body, as well as serving as a site for muscle attachment and aiding in movement. Bones are composed of a hard, dense outer layer of compact bone tissue and a spongy inner layer of trabecular bone tissue, which contains bone marrow.

Bone is a hard, connective tissue that comprises the skeletal framework of vertebrates. It is composed of a complex matrix of proteins, minerals, and cells. This matrix is composed of approximately 65% mineral (mostly calcium hydroxyapatite) and 35% organic matter (mostly collagen). The mineral component provides strength and rigidity, while the organic component provides flexibility and resilience. Bone is a highly vascularized and innervated tissue, which allows it to be remodelled and repaired throughout life.