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Types of Joint Mvmt
A&P CH7 Skeletal System Types of Joint Movement
Term | Definition |
---|---|
flexion | bending parts at a joint so that the angle between them decreases and the parts come closer together (bending the lower limb at the knee) |
extension | straightening parts at a joint so that the angle between them increases and the parts move farther apart (straightening the lower limb at the knee) |
dorsiflexion | bending the foot at the ankle toward the shin (bending the foot upward) |
plantar flexion | bending the foot at the ankle toward the sole (bending the foot downward) |
hyperextension | excess extension of the parts at a joint, beyond the anatomical position (bending the head back beyond the upright position) |
abduction | moving a pat away from the midline (lifting the upper limb horizontally to form a right angle with the side of the body |
adduction | moving a part toward the midline (returning the upper limb from the horizontal position to the side of the body |
rotation | moving a part around an axis (twisting the head from side to side) |
circumduction | moving a part so that its end follows a circular path (moving the finger in a circular motion without moving the hand) |
pronation | turning the hand so that the palm is downward or facing posteriorly (in anatomical position) |
supination | turning the hand so that the palm is upward or facing anteriorly (in anatomical position) |
eversion | turning the foot so that the sole faces laterally |
inversion | turning the foot so that the sole faces medially |
retraction | moving a part backward (pulling the chin backward) |
protraction | moving a part forward (thrusting the chin forward) |
elevation | raising a part (shrugging the shoulders) |
depression | lowering a part (drooping the shoulders) |