Terms of movement

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Quick videos in anatomy.
Presented and edited by Dr. Akram Jaffar, Ph.D.

Abduction and adduction: movement away from and toward the median plane.
Flexion and extension: bending and straightening.
Rotation: turning around a longitudinal axis.
Protrusion and retrusion: a forward and backward movement as in protrusion of the mandible, lips, or tongue.
Elevation and depression.

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