Lab Practical Flashcards
height of the orbital entrance
35 mm
width of the orbital entrance
40 mm
orbital depth
40 mm
length of the optic canal
4-9 mm
angle formed between theoretical intersection of the optic canals
75 degrees
volume of the orbit
29 mL
orbital index (Broca): Megaseme
> 89
orbital index (Broca): Mesaseme
84-89
orbital index (Broca): microseme
< 84
inferior margin bones: (2)
- zygomatic bone
2. maxilla
medial margin bones: (2)
- frontal process maxilla
2. posterior lacrimal crest
lateral margin bones: (2)
- zygomatic process frontal
2. zygomatic bone
superior margin bone: (1)
- frontal bone
orbital wall bones:
Floor (3)
- orbital plate maxilla
- orbital surface zygomatic
- orbital process palatine
orbital wall bones:
Lateral (2)
- greater wing sphenoid
2. orbital surface zygomatic
orbital wall bones:
Roof (2)
- orbital plate frontal
2. lesser wing sphenoid
orbital wall bones:
Medial (4)
- lamina papyracea (ethmoid)
- frontal process of maxilla
- lacrimal bone
- sphenoid
orbital index of Broca
(height of orbit x100) / width of orbit
sexual differences:
superior orbital margin
sharper in the female
sexual differences:
supraorbital ridge
more pronounced in males
sexual differences:
forehead
more vertical in females
sexual differences:
zygomatic process of frontal process
more robust (wider and thicker) in the male
