Kemik
Kemik, or bone, is a rigid organ that constitutes the major component of the vertebrate skeletal system. It consists of bone tissue embedded in a mineralized matrix, primarily collagen type I and hydroxyapatite calcium phosphate, which give bone its strength and resilience. Bone is organized into cortical (compact) bone on the outside and trabecular (spongy) bone inside, with bone marrow contained in the medullary cavities of certain bones.
Functions include providing structural support, protecting internal organs, enabling movement in conjunction with muscles, storing minerals
Key cell types are osteoblasts (build bone), osteocytes (maintain bone), and osteoclasts (resorb bone). Bone remodeling—
Clinically, bones can fracture, and conditions such as osteoporosis, osteoarthritis, and osteomyelitis affect bone structure and