Define bone, cartilage, and also the skeletal device List and describe the features of the bones system

Bone, or osseous tissue, is a hard, dense connective organization that creates most of the adult skeleton, the support framework of the body. In the areas of the skeleton where bones move (for example, the ribcage and joints), cartilage, a semi-rigid kind of connective tissue, provides flexibility and also smooth surfaces because that movement. The skeletal system is the body mechanism composed the bones and also cartilage and performs the following vital functions for the human being body:

supports the body facilitates motion protects internal organs produces blood cells stores and also releases minerals and fat

Support, Movement, and Protection

The most obvious functions of the skeletal mechanism are the gross functions—those clearly shows by observation. Merely by looking at a person, you deserve to see exactly how the skeleton support, facilitate movement, and protect the person body.

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Just as the stole beams that a building carry out a scaffold to support its weight, the bones and cartilage of her skeletal device compose the scaffold the supports the remainder of your body. Without the skeletal system, you would be a limp mass of organs, muscle, and skin.

Bones likewise facilitate movement by serving as points of attachment for your muscles. While some bones just serve as a assistance for the muscles, others additionally transmit the forces created when your muscles contract. Native a mechanical point of view, skeletal act together levers and also joints serve as fulcrums (Figure \\(\\PageIndex1\\)). Unless a muscle spans a joint and contracts, a bone is not going to move. For info on the communication of the skeletal and also muscular systems, the is, the musculoskeletal system, seek added content.

Figure \\(\\PageIndex1\\): Bones assistance Movement.Bones act as levers when muscles expectancy a joint and contract. (credit: Benjamin J. DeLong)

Bones also protect inner organs from injury by extending or neighboring them. Because that example, her ribs safeguard your lungs and heart, the skeleton of your vertebral tower (spine) defend your spinal cord, and the skeleton of her cranium (skull) defend your brain (Figure \\(\\PageIndex2\\)).


Mineral Storage, energy Storage, and also Hematopoiesis

On a metabolic level, bone tissue performs several an important functions. For one, the bone procession acts together a reservoir for a variety of minerals necessary to the work of the body, especially calcium, and potassium. This minerals, included into bone tissue, deserve to be released ago into the bloodstream to keep levels essential to support physiological processes. Calcium ions, for example, are necessary for muscle contractions and controlling the circulation of other ions involved in the infection of nerve impulses.

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Bone likewise serves as a website for fat storage and blood cabinet production. The softer connective organization that fills the internal of many bone is referred to as bone marrow (Figure \\(\\PageIndex4\\)). There space two species of bone marrow: yellow marrow and red marrow. Yellow marrow contains adipose tissue; the triglythrade stored in the adipocytes that the tissue have the right to serve as a source of energy. Red marrow is whereby hematopoiesis—the production of blood cells—takes place. Red blood cells, white blood cells, and platelets space all produced in the red marrow.

Figure \\(\\PageIndex4\\): Head of Femur mirroring Red and Yellow Marrow.The head the the femur consists of both yellow and also red marrow. Yellow marrow shop fat. Red marrow is responsible for hematopoiesis. (credit: alteration of work by “stevenfruitsmaak”/Wikiugandan-news.comia Commons)