Final answer:
The major functions attributed to bones are blood cell production, movement, support and protection, and storage of mineral and energy reserves.
Step-by-step explanation:
The major functions of the bones are body support, facilitation of movement, protection of internal organs, storage of minerals and fat, and hematopoiesis. Together, the muscular system and skeletal system are known as the musculoskeletal system.
Blood cell production (hematopoiesis) is a function attributed to bones. The central cavity of long bones is filled with marrow, which is responsible for forming red and white blood cells.
Movement is another function of bones. The skeleton, with its joints, allows the body to change shape and positions.
Support and protection are also functions attributed to bones. The rigid skeleton acts as a framework to support the other organs of the body and encloses or partly encloses various organs, protecting them from trauma.
Flexibility is not directly attributed to bones, as bones provide a rigid structure. However, the flexibility in movement is facilitated by the joints between bones.
Storage of mineral and energy reserves is also a function attributed to bones. Bone tissue acts as a reservoir for minerals like calcium and phosphorus, which can be released back into the bloodstream as needed.