PCBI101: ARTICULAR

    Cards (22)

    • Articulation or Joint

      The physical connection between two bones
    • Joints
      • Hold bones together
      • Allow movement
      • Make bone growth possible
    • Arthrology
      The science that deals with the study of joints
    • Functional Classification of Joints

      • Synarthrosis - immovable joint
      • Amphiarthrosis - slightly movable joint
      • Diarthrosis - freely movable joint
    • Structural Classification of Joints

      • Fibrous Joints
      • Cartilaginous Joints
      • Synovial Joints
    • Fibrous Joints

      • Bones united by fibrous connective tissue
      • Allow little or no movement
    • Types of Fibrous Joints

      • Sutures
      • Syndesmoses
      • Gomphoses
    • Sutures
      Fibrous joints between the bones of the skull, immovable due to interlocking junctions between the bones and short numerous connective fibers
    • Syndesmoses
      Fibrous joints where the bones are separated by some distance and are held together by ligaments
    • Gomphoses
      Consist of pegs fitted into sockets and held in place by ligaments
    • Cartilaginous Joints

      • Unite two bones by means of cartilage
    • Types of Cartilaginous Joints

      • Synchondrosis
      • Symphysis
    • Synchondrosis
      Bones joined together by hyaline cartilage
    • Symphysis
      Bones joined together by fibrocartilage
    • Synovial Joints

      • Commonly referred to as freely movable joints, but their flexibility does vary
      • All synovial joints have certain characteristics in common
    • Types of Synovial Joints

      • Plane or Gliding Joints
      • Saddle Joints
      • Hinge Joints
      • Pivot Joints
      • Ball and Socket Joints
      • Ellipsoid or Condyloid
    • Plane or Gliding Joints

      Consist of two opposed flat surfaces that glide over each other
    • Saddle Joints

      Consist of two saddle-shaped articulating surfaces oriented at right angles to one another, allow movement in two planes
    • Hinge Joints

      Consist of a convex cylinder of one bone applied to a corresponding concavity of the other bone, permit movement in one plane
    • Pivot Joints

      Consist of the rounded end of one bone fitting into a ring formed by the other bone, restrict movement to rotation around a single axis
    • Ball and Socket Joints

      Consist of a ball at the end of one bone and a socket in an adjacent bone into which a portion of the ball fits, allows a wide range of movement in any direction
    • Ellipsoid or Condyloid

      A modified ball and socket joint in which the joint surfaces are elongated, the shape of the joint limits its range of movement nearly to a hinge motion, but in two planes
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