SKULL Flashcards by gelica henson

Sagittal + lambdoidal

Lambda

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Sutures that meet up to ASTERION

Occ mastoid
Squamosal
Lambdoid

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Sagittal + Coronal

Bregma

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Parietal Sphenoid Temporal

Pterion

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Ana sig of frontal bone

Make the upper margins of the orbit

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Transmitted by the supraorbital foramen

Supraorbital nerve

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Medial boundary of frontal bone

Nasal

Frontal process of maxilla

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Lateral boundary of frontal bone

Frontal process of the zygomatic bone

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Openings in the ant view of the orbital cavity

Orbital fissure
Supra infra
Ethmoidal foramina
Optic canal

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Serves as voice resonators

Frontal air sinuses

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Frontal sinus opens thru

Infundibulum

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Connection bet Maxilla and nasal

Hiatus semilunaris

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Lower border of Nasal bone + maxilla

Ant nasal aperture

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2 maxilla forms

Upper jaw
Ant part of hard
Lat walls of the nasal cavity
Floor of the orbital cavity

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Infraorbital foramen transmits _ wc supplies _

Infraorbital nerve - skin of the face

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Large pyramid shape cavity lined w mucus membrane

Maxillary sinus

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Zygomatic bone + maxilla

Zygomaticomaxillary suture

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Zygomatic bone + zygomatic process of the temporal bone =

Zygomatic arch

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2 openings in the zygomatic bone & nerves transmitted

Zygomaticofacial foramina / nerve

Zygomaticotemporal foramina / nerve

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Mandible consists of

Horizontal body

2 vertical rami

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Opens into the ant surface of mandible BELOW 2nd premolar

Mental foramen

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Biggest lat bone of skull

Parietal or temporal

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Forms the sides and roof of the cranium

Parietal bones

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Suture articulating parietal

Sagittal 
Coronal
Squamosal
Lambdoidal
Pterion

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Skull is completed from the SIDE by the ff..

Squamous part of occ bone Temporal - styloid, mastoid, zygomatic process, SQUAMOUS, TYMPANIC Greater wing of sphenoid Ramus and body of mandible

Serves as attachment for TEMPORALIS MUSCLE

Superior and inferior TEMPORAL LINES

Begins as a single bone from the post margin of the zygomatic process of frontal bone

Sup and inf temporal lines

Vertical fissure that lies within the fossa bet the pterygoid process of sphenoid and back of maxilla

Pterygomaxillary fissure

Horizontal fissure bet greater wing of sphenoid and maxilla. Leads forward into the orbit

Inferior orbital fissure

Foramen near sagittal suture

Parietal foramen

Bones enclosed by sutures. | Developmental technicalities in the formation of suture

Sutural bones or WORMIAN BONES

Suture in the superior view

Coronal = parietal + frontal

Anterior division of the inferior view of skull is formed by the

HARD PALATE

Bones making up the hard palate

Palatine process of maxilla | Horizontal plate of palatine bones

2 sutures in the anterior div of inf view of skull

Median palatine | Transverse palatine

Incisive fossa and incisive foramen receives....

Nasopalatine nerves and Sphenopalatine arteries

Openings at the posterolateral part of the ant div of inf view

Greater and lesse pal foramen

Transmits PALATINE NERVES & vessels

Greater lesser pal foramen

Above post edge of hard palate Separated by post margin of vomer Bounded lat by medial pterygoid plates

Choanae or post nasal aperture

A curved spike portion of the INFERIOR END of medial pterygoid plate

Pterygoid hammulus

Superior end portion of the medial pterygoid plate

Scaphoid fossa

Scaphoid fossa is the site of origin of what muscle

Tensor veli palatini muscle

Sphenoid bone is pierced by

Pterygoid canal

bone seen in nasal and cranial cavity

Ethmoid bone

Pierced by foramen spinosum and ovale

Greater wing of sphenoid

Posterolateral to spinosum and ovale

Spine of sphenoid

Seen in the ant surface of the PETROUS part of the temporal bone

Carotid csnal

Formed by the MEDIAL END of the petrous part of temporal bone, BASILAR part of occ and GREATER wing of sphenoid Temporal, occ, sphenoid

Foramen lacerum

Behind post aperture of nose | In front of foramen magnum

Sphenoid bone and basilar part of occ bone

Small prominence in the undersurface of the basilar part of the occ bone in the midline

Pharyngeal tubercle

Pharyngeal tubercle gives attachment to

Fibrous raphe of the pharynx

Articulate with the superior aspect of the LAT MASS OF ATLAS

Occ condyle

Superior to summit of the occ condyle

Hypoglossal canal

Hypoglossal canal transmits

Hypoglossal nerve

Condylar canal transmits

Emissary vein

Post to foramen magnum in the midline wc runs upward and backward to the ext occ protuberance

Ext occ crest

Projects downward to formalveolar arch wc carries the teeth

Alveolar processes

Branch of frontal nerve | Leaves the orbital cavity to supply FRONTAL AIR SINUS & SKIN OF THE FOREHEAD & SCALP

Supraorbital nerve

Maxillary sinus is supplied by

Superior alveolar and infraorbital nerves

Forms the temporal bone C shaped Forms the bony part of ext auditory meatus

Tympanic plate

Tympanic plate forms...

Bony part of ext aud meatus | Temporal bone

Medial to styloid process | DEEP NOTCH in the PETROUS part of temporal bone + SHALLOW NOTCH in occ

Jugular foramen