THE SKELETON. Objectives. Identify the bones that articulate at different joints in the body. Name the 6 types of synovial joint and give examples of each. Describe the structure and function of parts of a synovial joint. Be able to classify joints according the movement they allow.
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1. Fibrous – these are fixed or immovable joints such as the cranium, sacrum and the coccyx.
2. Cartilaginous – these are slightly movable joints such as the vertebrae.
3.Synovial – these are freely movable joints such as the shoulder and hip.
1.Ball & socket – hip and shoulder.
2. Hinge – knee, elbow and ankle.
3. Pivot – radio-ulna, atlas/axis.
4. Saddle – thumb.
5. Condyloid – wrist.
6. Gliding – between vertebrae in spine.
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In the ankle the talus articulates with the tibia and fibula.
Ligaments provide stability to the joint.
The elbow joint
In the elbow the humerus articulates with the radius and the ulna.
Movement can only occur in one plane.
In this joint the radius and ulna bones articulate with 3 of the carpal bones.
The spine has five areas and has to fulfil many functions such as weight bearing stability and support.
There are three type of joint in the spine but for A level the main one to know is the gliding joints between the vertebral arches.Condyloid and gliding joints
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