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NCFE

Skeletal System and Joints

TermDefinition
The Appendicular Skeleton this consists of 126 bones which are located at the extremities of the body.
The Axial Skeleton this consists of 80 bones which are located in the upper central part of the body.
Support The body is shaped by the skeleton as it provides the framework in which the skeleton supports body structures and takes the body’s weight.
Movement Muscles need attachment points and a structure to for them to work against and the skeleton provides this. The bones within the body are used as levers in which one muscle contracts in order for another to extend.
Protection of the vital organs Bones play an important role in protecting the body from harm and injury. An example of this would be the rib cage protects your vital organs or the skull protects your brain.
Storage Minerals The bones also act as storage areas in which minerals that are much needed for your body are stored within the bones such as calcium
Blood Cell production Within the long bones of the skeletal system red and white blood cells are produced. Red cells are used to carry oxygen around the body and white blood cells are used to fight off infection and diseases.
Shape The skeleton gives the body shape, which changes with growth and makes you tall or short.
Joints ........... are the place where two bones meet and come together in the bod
Fixed Joints Some of your joints, like those in your skull, are ________ and don't allow any movement. The bones in your skull are held together with fibrous connective tissue
Slightly Movable Joints Other joints, such as those between the vertebrae in your spine, which are connected to each other by pads of cartilage, can only move a small amount.
Synovial They are movable joints containing a lubricating liquid called synovial fluid.
Abduction Movement away from the mid-line of the body
Adduction Movement towards the mid-line of the body
Extension Straightening limbs at a joint
Flexion Bending the limbs at a joint
Rotation A circular movement around a fixed point
Articulating Cartilage This is the smooth, white tissue that covers the ends of bones where they come together at a joint. It allows the bones to glide over each other with very little friction.
Ligaments Connect bones to other bones to form joints.
Tendons Connects bone to muscle.
Joint Capsules Each _____________ has two parts: an outer synovial membrane and inner synovial fluid. The function is to provide flexibility and allow movement at the joint and to resist dislocation of the joint.
Synovial Membrane The function of the synovial membrane is to produce synovial fluid.
Synovial Fluid This fluid circulates around the patella, tibia, and femur. It helps lubricate and provide nutrients to the joint.
Posture state of muscular and skeletal balance which protects the supporting structures of the body against injury or progressive deformity
Created by: Mkgriffiths