Bone, or osseous tissue, is a hard, dense connective organization that develops most the the adult skeleton, the support framework of the body. In the locations of the skeleton where bones relocate (for example, the ribcage and joints), cartilage, a semi-rigid type of connective tissue, offers flexibility and smooth surfaces because that movement. The skeletal system is the body mechanism composed of bones and also cartilage and also performs the following vital functions because that the human being body:support the human body facilitates motion protects inner organs produce blood cells stores and releases minerals and fat
Support, Movement, and Protection
The most obvious functions the the skeletal mechanism are the gross functions—those visible by observation. Merely by looking in ~ a person, you deserve to see how the skeletal support, facilitate movement, and protect the human body.
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Just together the stole beams of a building carry out a frame to assistance its weight, the bones and cartilage of her skeletal system compose the scaffold that supports the remainder of her body. There is no the skeleton system, you would certainly be a limp fixed of organs, muscle, and skin.
Bones likewise facilitate motion by serving as points of attachment for your muscles. While some bones only serve together a support for the muscles, others additionally transmit the forces produced when your muscles contract. Native a mechanical suggest of view, bones act together levers and also joints offer as fulcrums (Figure (PageIndex1)). Uneven a muscle spans a joint and also contracts, a bone is no going come move. For information on the interaction of the skeletal and muscular systems, the is, the musculoskeletal system, seek added content.
Bones also protect inner organs native injury by spanning or surrounding them. Because that example, her ribs safeguard your lungs and heart, the skeleton of your vertebral obelisk (spine) protect your spinal cord, and also the bones of her cranium (skull) safeguard your brain (Figure (PageIndex2)).
Mineral Storage, power Storage, and also Hematopoiesis
On a metabolic level, bone tissue performs several critical functions. Because that one, the bone matrix acts together a reservoir for a variety of minerals crucial to the work of the body, specifically calcium, and potassium. These minerals, included into bone tissue, have the right to be released earlier into the bloodstream to maintain levels necessary to assistance physiological processes. Calcium ions, for example, are essential for muscle contractions and also controlling the flow of other ions involved in the transmission of nerve impulses.
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Bone likewise serves as a website for fat storage and also blood cabinet production. The softer connective organization that fills the internal of many bone is described as bone marrow (Figure (PageIndex4)). There space two species of bone marrow: yellow marrow and also red marrow. Yellow marrow consists of adipose tissue; the triglythrade stored in the adipocytes that the tissue have the right to serve together a resource of energy. Red marrow is where hematopoiesis—the production of blood cells—takes place. Red blood cells, white blood cells, and also platelets space all created in the red marrow.