Topographical Landmarrks

1. Acanthion - midline junction of the upper lip and auricle nose.
2. Auricle or Pinna - ear or outer ear.
3. External Acoustic Meatus - external opening into the ear cannal.
4. Glabella - smooth triangular area, superior to the bridge of the nose and between the eyebrows.
5. Gonion - lower posterior angle seen on each side of the jaw or mandible.
6. Infraorbital Margin or IOM - inferior rim of the orbital base.
7. Inion - prominent bump midline at the back of the head. It is also known as ”external occipital protuberance”.
8. Inner Canthus - junction of the upper and lower eyelids.
9. Mental point - midpoint of the chin. It is in the center of the flat triangular region.
10. Mentum - a flat triangular region.
11. Nasion - slight depression at the bridge of the nose and it marks the junction of the frontal and nasal lobes.
12. Superciliary ridge - a.k.a superciliary arch. It is the ridge of the bone found over each eye and under each eyebrow.
13. Tragus - small flack of cartilage over the EAM.
14. Vertex - most superior portion of the head.