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Joints of the Human Body

Joints of the Human Body. What is a joint?. Location at which two or more bones meet Allow movement and provide mechanical support. Classification. Fibrous Joints. Held together by thin layer of strong connective tissue No movement between the bones

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Joints of the Human Body

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  1. Joints of the Human Body

  2. What is a joint? • Location at which two or more bones meet • Allow movement and provide mechanical support

  3. Classification

  4. Fibrous Joints • Held together by thin layer of strong connective tissue • No movement between the bones • Ex: sutures of the skull, teeth in sockets

  5. Cartilaginous Joints • Attached by discs made of cartilage and ligaments • Allow a limited degree of movement • Ex: vertebrae of spine, pubis joint

  6. Synovial Joints • Freely movable joints • All contain joint capsule (holds together), synovial cavity, and joint cartilage • Sub-divided into groups depending on type of movement • Ball-and-Socket Joints • Hinge Joints • Gliding Joints • Pivot Joints

  7. Ball-and-Socket Joint • Ball-shaped bone fits into the cup-like space of another bone • Allows movement in almost all directions • Ex: shoulder (humerus/glenoidfossa), hip (femur, acetabulum)

  8. Hinge Joint • Convex part of one bone fits into concave part of another, allowing motion in only one plane • Ex: elbow, knee

  9. Gliding Joints • Joint surfaces are nearly flat or slightly curved • Allow sliding or back-and forth motions and twisting movements • Ex: wrist and ankle

  10. Pivot Joint • The end of one bone having a ‘peg’ that fits into a ‘ring’ formed by the other bone • Movement limited to rotation • Ex: neck rotating side to side, radius and ulna

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