Skeletal system Skeletal system crosswords and interesting facts http://www.moomoomath.com/skeletal-system-crossword-puzzle.html The human skeleton performs six major functions; support, movement, protection, production of blood cells, storage of minerals, and endocrine regulation. Our bones give us structure. For example, without the structure of our bones, our lungs would collapse. Our bones work with the muscular system to help us move. The skeleton helps to protect our vital internal organs from being damaged. The skull protects the brain The vertebrae protect the spinal cord. The rib cage, protect the lungs, heart and major blood vessels. blood cells are created in the bone marrow Bones store calcium and also store iron which is involved in metabolism. Bone cells release a hormone which contributes to the regulation of blood sugar (glucose) and fat deposition Bones are made of Cancellous bone – the spongy bone that stores the red bone marrow; where blood cells are made. Compact bone – hard, dense bone. It gives strength to the hollow part of the bone. Periosteum – a protective layer where there is no hyaline cartilage. Ligaments and tendons attach to the periosteum. marrow cavity – contains the yellow bone marrow; where white blood cells are made.