Plane – sagittal, as there is flexion and extension of the knees, elbows, neck and spine. Axis – frontal, as there is rotation around a line running from left to right through the centre of ...

b: Sagittal line drawing showing structures in the sagittal plane including the tongue, soft palate, epiglottis, vestibule, false and true cords, arytenoid mass, cricoid cartilage, and trachea.