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FRONTAL BONE - ANATOMICAL FEATURES

• vertical part = frontal part = squamous part = squama
  

• external surface = frontal surface
  

• metopic suture = remains of frontal suture
• glabella
• frontal eminence
• superciliary arch
• supraorbital margin
• supraorbital notch  or supraorbital foramen
• zygomatic process
• temporal line
  
• superior temporal line = upper temporal line
  
• inferior temporal line = lower temporal line
  
• temporal surface
• parietal margin
  

• internal surface = cerebral surface

• sagittal sulcus
• frontal crest
• notch of foramen cecum
• depressions for convolutions of brain
• grooves for anterior branches of middle meningeal vessels
• irregular fossae for arachnoid granulations
  

• nasal part
  

• nasal margin
  
• nasal notch
• nasal process
• nasal spine
• grooves for part of roof of nasal cavity

• front margin of ethmoidal notch
  

• frontal air sinuses

• orbital part = horizontal part

• orbital plate

• inferior surface

• lacrimal fossa
• trochlear fovea or trochlear spine

• superior surface = cerebral surface
  

• depressions for convolutions of frontal lobes of brain
• grooves for meningeal branches of ethmoidal vessels
  

• ethmoidal notch

• lateral margin of ethmoidal notch
  

• groove of anterior ethmoidal canal
• halves of ethmoidal air cells
• groove of posterior ethmoidal canal

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