The internal surface of the squama frontalis of the frontal bone is concave and presents in the upper part of the middle line a vertical groove, the sagittal sulcus, the edges of which unite below to form a ridge, the frontal crest; the sulcus lodges the superior sagittal sinus, while its margins and the crest afford attachment to the falx cerebri.
It also is part of the parietal, and occipital bones.
This article incorporates text from a public domain edition of Gray's Anatomy.
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Bones of head and neck: the neurocranium of the skull (TA A02.1.01–07, GA 2.129–155)
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| Occipital |
| Squama |
- external
- Inion/External occipital protuberance
- External occipital crest
- Nuchal lines
- planes
- internal
- Cruciform eminence
- Internal occipital protuberance
- Sagittal sulcus
- Internal occipital crest
- Groove for transverse sinus
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| Lateral parts |
- Condyle
- Condyloid fossa
- Condylar canal
- Hypoglossal canal
- jugular
- Jugular process
- Jugular tubercle
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| Basilar part |
- Pharyngeal tubercle
- Clivus
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| Other |
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| Parietal |
- Parietal eminence
- Temporal line
- Parietal foramen
- Sagittal sulcus
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| Frontal |
| Squama |
- Frontal suture
- Frontal eminence
- external
- Superciliary arches
- Glabella
- foramina
- Zygomatic process
- internal
- Sagittal sulcus
- Frontal crest
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| Orbital part |
- Ethmoidal notch
- Fossa for lacrimal gland
- Trochlear fovea
- Frontal sinus
- Frontonasal duct
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| Temporal |
| Squama |
- Articular tubercle
- Suprameatal triangle
- Mandibular fossa
- Petrotympanic fissure
- Zygomatic process
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| Mastoid part |
- Mastoid foramen
- Mastoid process (Mastoid cells)
- Mastoid notch
- Occipital groove
- Sigmoid sulcus
- Mastoid antrum (Aditus)
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| Petrous part |
- Carotid canal
- Facial canal (Hiatus)
- Internal auditory meatus
- Cochlear aqueduct
- Stylomastoid foramen
- fossae
- Subarcuate fossa
- Jugular fossa
- canaliculi
- Inferior tympanic
- Mastoid
- Styloid process
- Petrosquamous suture
- (note: ossicles in petrous part, but not part of temporal bone)
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| Tympanic part |
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| Sphenoid |
| Surfaces |
- Superior surface: Sella turcica
- Dorsum sellae
- Tuberculum sellae
- Hypophysial fossa
- Posterior clinoid processes
- Ethmoidal spine
- Chiasmatic groove
- Middle clinoid process
- Petrosal process
- Clivus
- Lateral surface: Carotid groove
- Sphenoidal lingula
- Anterior surface: Sphenoidal sinuses
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| Great wings |
- foramina
- Rotundum
- Ovale
- Vesalii
- Spinosum
- Spine
- Infratemporal crest
- Sulcus for auditory tube
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| Small wings |
- Superior orbital fissure
- Anterior clinoid process
- Optic canal
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Pterygoid
processes |
- fossae
- pterygoid plates
- Pterygoid canal
- Hamulus
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| Other |
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| Ethmoid |
| Plates |
- Cribriform plate
- Crista galli
- Olfactory foramina
- Perpendicular plate
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| Surfaces |
- Lateral surface Orbital lamina
- Uncinate process
- Medial surface Superior nasal concha
- Superior meatus
- Middle nasal concha
- Middle meatus
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| Labyrinth |
- Ethmoid sinus
- ethmoidal foramina
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M: BON/CAR
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anat (c/f/k/f, u, t/p, l)/phys/devp/cell
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noco/cong/tumr, sysi/epon, injr
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proc, drug (M5)
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