CRANIAL TOPOGRAPHY SURFACE LANDMARKS

Question 1

• Symmetrically divides the body into left and right halves.

Answer 1

Midsagittal Plane or Median Plane (MSP)

Question 2

• Connecting the pupils or outer canthi of the eyes

Answer 2

Interpupillary Line or Interorbital Line (IPL)

Question 3

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* Slight depression above each eyebrow.
* Corresponds to the anterior fossa of the cranial vault.

Answer 3

Supraorbital Groove (SOG

Question 4

• Superior rim of each orbit.

Answer 4

Supraorbital Margin (SOM)

Question 5

• Ridge of bone on each eyebrow.

Answer 5

Supercilillary Arch

Question 6

Smooth prominence between the eyebrow and above
the bridge of the nose.

Answer 6

Glabella

Question 7

• Depression at the nose bridge, junction of the 2
  nasal bones and frontal bone.

Answer 7

Nasion