Joints part 1

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  1. Joint articulation
    is the point of contact between two bones, between bone and cartilage or between bone and teeth.
  2. Fibrous Joints
    there is no synovial cavity in this joint and it is held together by dense irregular connective tissue
  3. cartilaginous joints
    There is no synovial cavity in this joint and it is held together by cartilage
  4. synovial joints
    there is a synovial cavity in this joint and the bones are united by dense irregular connective tissue of an articular capsule and by ligaments
  5. Synarthrosis
    an immovable joint
  6. amphiarthrosis
    a slightly moveable joint
  7. Diarthrosis
    a freely movable joint.  They are all synovial joints
  8. Fibrous joints : Suture
    is a fibrous joint composed of a thin layer of dense irregular connective tissue.  It is functionally synarthrosis
  9. Fibrous joints: Syndesmoses
    is a fibrous joint in which there is a greater distance between the articulating surfaces and more dense irregular connective tissue.  Functionally classified as ampiarthrosis
  10. Fibrous joints: interosseus membranes
    a substantial sheet of dense irregular connective tissue that binds neighbouring long bones and permits slight movements (amphiarthrosis)
  11. Synchondrosis
    is a cartilaginous joint in which the connective tissue is hyaline cartilage. ex ephyseal growth plate.  Functionally it is a synarthrosis.
  12. Joint classification
    -based on the presence or absence of a space between articulating bones 

    - the type of connective tissue that binds them together
  13. Symphysis
    is a cartiliginous joint in which the ends of the articulating bones are covered with hyaline cartilage, but a broad flat disc of fibrocartilage connects the bones.  They all occur at the midline of a bone. functionally amphiarthrosis
  14. Synovial joints
    • all have synovial cavities
    • all are diarthroses
  15. articular capsule
    surrounds a synovial joint.  It encloses the synovial cavity, and unites the articulating bones.  It is composed of two layers an outer fibrous membrane and an inner synovial membrane
  16. fiberous capsule
    has dense irregular connective tissue that attaches the periosteum of the articulating bones.  Because it is flexible it permits considerable movement, while its strength helps prevent the bones from dislocating
  17. ligaments
    fiber bundles that hold bones close together during movement
  18. synovial membrane
    the inner layer of the articular capsule is composed of areolar connective tissue with elastic fibers
  19. synovial fluid
    it is a viscous, clear, pale yellow.  It forms a thin film over the surfaces in the articular capsule.  It reduces friction, absorbs shocks and supplying oxygen and nutrients to and removing carbon dioxide and metabolic wastes from the chondrocytes within articular cartilage
  20. accessory ligaments
    one lies outside the articular capsule and the other within
  21. articular discs
    • pads of fibrocartilage found between the articular surfaces of the bones and are attached to the fibrous capsule.
    • they allow the bones of different shapes to fit together.
  22. nerve and blood supply
    synovial joints contain an extensive nerve and blood supply which carry information about joint stretch and pain.
  23. Bursae
    saclike structures, similar in structure to joint capsules, that alleviate friction in the joints such as the shoulder and knee joints.
  24. Tendon sheaths
    are tubelike bursae that wrap around tendons where there is considerable friction.
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Joints part 1
2013-03-18 23:19:39
Joints part

Joints part 1
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