Ancestry Flashcards
Nasal Bone Contour (African)
Low and rounded (Quonset)
Nasal Bone Contour (Asian)
Oval contour with elongation superior-inferiorly, projecting anteriorly from mid-face
Nasal Bone Contour (European)
Tented, steep lateral walls, flat superior plateau
Semi triangular vaulted, steep sided lateral walls and narrow superior surface plateau
Steepled, triangular cross section, lacking superior plateau
Nasal Aperture Width (European)
Narrow (long)
Nasal Aperture Width (Asian)
Medium (rounded)
Nasal Aperture Width (African)
Wide
Anterior Nasal Spine (African)
Short (rounded), no projection fro the nasal ridge
Anterior Nasal Spine (Asian)
Medium (projects to the level of prosthion viewed from the side but does not reach it)
Anterior Nasal Spine (European)
Long (sharp)
Terminated beyond prosthion
Usually has a sharp anterior projection
Inferior Nasal Margin (African)
Guttered; gradually sloping of nasal floor from posterior to anterior
Incipient guttering (sloping commences more anteriorly, but is less than 1)
Inferior Nasal Margin (Asian)
Straight (immediate transition from nasal floor to vertical maxilla)
Inferior Nasal Margin (European)
Partial sill (weak but present ridge of vertical bone)
sill pronounce ridge no smooth transition fro nasal floor to maxilla
Nasal overgrowth (Eur/Afr)
Absent (border of nasal bones does not project beyond the maxilla
Nasal overgrowth (Asian)
Present (border of nasal bones projects beyond the maxilla)
Zygomatic Projection (Eur/Afr)
Retreating (zygomata more backwards relative to opening of nasal aperture in the vertical plane)
Zygomatic Projection (Asian)
Projecting (zygomata on same vertical plane as opening of nasal aperture)
Malar Tubercle (African)
Absent
Malar Tubercle (Asian)
Incipient (very small tubercle, 2mm)
Malar Tubercle (European)
Trace (medium protrusion 2-4mm)
Interorbital Breadth (European)
Narrow relative to face width
Interorbital Breadth (Asian)
Intermediate
Interorbital Breadth (African)
Wide relative to face width
Zygomaxillary Suture (African)
Smooth (lateral projection at inferior end)
Zygomaxillary Suture (Asian)
Angled (greatest lateral projection near the midline)
Zygomaxillary Suture (European)
S-Shape (zig-zag)
Alveolar Prognathism (Eur/Asian)
Orthognathic (flat mid-facial profile)
Alveolar Prognathism (African)
Prognathic (projecting mid-facial profile)
Transverse palatine suture shape (Asian)
Straight and symmetrical suture intersects middle suture perpendicularly
Transverse palatine suture shape (African)
Anterior bulging
Transverse palatine suture shape (European)
Anterior and posterior deviation of the suture at the midline
Posterior symmetrical deviation at midline
Mandibular Torus (Eur/Afr)
Absent (no ridge on lingual surface of mandible
Mandibular Torus (Asian)
Present (ridge on the midline of hard plate)
Palatine torus (Eur/Afr)
Absent (no ridge on the midline of hard plate)
Palatine torus (Asian)
Present (ridge on midline of hard plate)
Postbregmatic depression (Eur/Asian)
Absent
Postbregmatic depression (African)
Present (depression along saggittal suture posterior to bregma)