The skeleton is the hard framework of which the human body is built around. The skeletal system is made up of bones, cartilages, and joints. The skeleton starts to develop at embryo stage and continues into adult life. The bones in embryos are made up of mainly cartilage and are soft. A process called ossification uses calcium to create bone as the child grows up and the bones then become hard and strong.
As a person ages, bones lose their density and strength. If this becomes severe it is called osteoporosis. To help prevent this, research suggests that regular exercise is undertaken and eating foods high in calcium help bones stay stronger for longer. Bones are made up of a hard form of connective tissue and are responsible for almost all of the human skeletons strength. Cartilage is also a form of connective tissue however not as rigid. The difference between bone and cartilage is its mineralization factors.
Bones are high in calcium salts whereas cartilage isn’t. Joints make the human skeleton mobile. A joint occurs between “two or more bones”, “bone and cartilage” and “cartilage and cartilage”. The function of the skeletal system is to give strength, support, and shape to the body. It also protects the delicate organs of the human body, gives movement and helps with the production of red cells.
A diagram of the human skeleton is shown below: There are 3 types of classification joints within the human body, Structural classification, Functional classification, and Regional classification. Structural classification: Fibrous joints are made up of fibrous tissue and due to this they are either immovable joints or very limited in the way that they can move. Functional classification: Immovable joints (Synarthroses), Partially moveable joints: (Amphiarthroses) and Freely movable joints: (Diarthroses). The diagram below shows what types of joints the human body is made up of: The picture above shows how muscular force can be transmitted by the skeletal system. Muscles exert a force on bones when they contract.
This happens for example when you lift or hold an object, or when you move a part of your body. “Muscles connect to muscles via aponeuroses, and muscles attach to bones via tendons or aponeuroses. Thus, when muscle contracts, the force of movement is transmitted through the attachment, which pulls on the bone to produce skeletal movement”. (oli.cmu.edu, 2017.)