Lecture 23 Flashcards
Components of the skull
Neural (brain) and visceral (face)
Skull minus mandible
Cranium
Formed by union of maxillary bones and zygomatic bones
Viscerocranium
Formed by bones making the calvaria
Neurocranium
Skull cap
Calavaria
Bones in viscerocranium
Nasal (2), lacrimal (2), zygomatic (2), maxillae, inferior nasal conchae (2), palatine
Bones in neurocranium
frontal, parietal (2), ethmoid, sphenoid, temporal (2), occipital)
Landmark for dividing line of viscero/neurocranium
external acoustic (auditory) meatus
Components of calavaria
Outer table, dipole, inner table
Sutures of the skull
coronal, sagittal, lambdoidal, meteoric, squamosal, wormian bones
4 diploic veins
frontal veins, anterior temporal veins, posterior temporal veins, occipital veins
Veins that pierce the skill and connect the veins of the scalp with diploic veins and internal venous sinuses
Emissary veins
Veins that run with diploic (cancellous) bone
diploic veins
Function of diploic veins
drain neurocranium and scalp; drain into dural venous sinuses
Orbit foramina
Optic canal
Superior orbital fissure
Inferior orbital fissure
Infraorbital groove