SKULL BONES Flashcards
Location of FRONTAL BONE
located at front of skull (“forehead”)
Features of FRONTAL BONE
- Frontal sinuses
- Coronal Suture
- Glabella
- Supraorbital Foramen
- Supercillary Arches
smooth surface between supraorbital ridges
glabella
opening on superior aspect of orbit that transmits supraorbital nerve/artery/vein
Supraorbital foramen
bony prominence on supraorbital margin
Superciliary Arches
Location of PARIETAL BONES
Lateral walls of skull
Features of PARIETAL BONES
- Sagittal Suture
- Lambdoid Suture
- Squamous Suture
Location of TEMPORAL BONES
lateral walls of skull, inferior to parietal bones
Features of TEMPORAL BONES
Internal Acoustic Meatus
External Acoustic Meatus
Petrous Region
Mastoid Process
Styloid Process
Zygomatic Process (+ Zygomatic Arch)
Stylomastoid Foramen
Location of OCCIPITAL BONE
posterior region of skull
Features of OCCIPITAL BONE
Foramen Magnum
External Occipital Protuberance
Occipital Condyles
Hypoglossal Canal
Jugular Foramen
Location of SPHENOID BONE
butterfly-shaped, located internally
Features of SPHENOID BONE
Sella Turcica
Sphenoid Sinus
Lesser Wings / Greater Wings
Pterygoid Processes (+ Medial and Lateral Pterygoid Plate)
Superior Orbital Fissures
Optic Canal
Foramen Spinosum
Foramen Rotundum
Foramen Lacerum
Location of ETHMOID BONE
Inferior to frontal bone/posterior to nasal bones/anterior to sphenoid bone
Features of ETHMOID BONE
Cribriform Foramina
Crista Galli
Ethmoid Air Cells (Sinuses)
Superior Nasal Conchae
Middle Nasal Conchae
Perpendicular Plate
T/F: The INFERIOR NASAL CONCHAE is part of the ETHMOID BONE
F - separate bones that do not articulate with ethmoid bone (only Superior nasal conchae are part of ethmoid)
4 Skull Sutures
Coronal, Sagittal, Squamous, Lambdoid
Coronal Suture
connects frontal and parietal bones
Sagittal Suture
connects parietal bones
Squamous Suture
connects temporal and parietal bones
Lambdoid Suture
connects occipital and parietal bones