http://www.engagingm uscles.com/
Abduction/Adducti on primarily occur in the frontal (coronal) plane around an anteroposterior axis.
If you can see the axis, you can see the plane. The axis is always perpendicular to the plane.
http://www.engagingm uscles.com/
The sagittal (median) plane cuts the human body into right and left halves. Flexion/Extension primarily occur in the sagittal plane around a mediolateral axis.