Movements Allowed by Synovial Joints

• Muscle Origins & Insertions

  every skeletal muscle of the body is attached to bone or ther connective tissue structures at no fewer that 2 points

  the muscles; origin is attached to the immovable (or less movable) bone

  its other end, the insertion is attached to the movable bone

  body movement occurs when muscles contract across joints + their insertion moves toward their origin
• Body Movements

  body movement occurs when muscles contract across joints + their insertion moves toward their origin

  the movements can be described in directional terms relative to the axes around which the body part moves + the planes of space along which the movement occurs:

  transverse, frontal or sagittal plane
• Various Range of Motion

  range of motion allowed by synovial joints varies from nonaxial (gliding movements only) to uniaxial (movement in one plane)

  biaxial = movement in 2 planes

  multiaxial = movement in or around all 3 planes of space + axes
• General Types of Movements

  gliding

  angular

  rotation