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Foramina of Skull

Anatomy of the Foramina of the Skull

QuestionAnswer
Incisive fossa Nasopalatine nerve, sphenopalatine vessels
Greater palatine forament Greater palatine nerve and vessels
Lesser palatine foramen Lesser palatine nerve and vessels
Foramen lacerum Greater petrosal nerve, deep petrosal nerve, internal carotid artery (all across upper portion)
Pterygoid canal Nerve of the pterygoid canal (greater and deep petrosal nerves), vessels of the pterygoid canal
Foramen ovale Mandibular nerve (V3), lesser petrossal nerve, accessory meningeal artery
Foramen spinosum Middle meningeal artery and vein, meingeal branch of V3
Carotid canal Internal carotid artery and plexus
Petrotympanic fissure chorda tympani of facial nerve
Stylomastroid foramen Facial nerve
Jugular fossa CN IX, X, XI, Inferior petrosal sinus, internal jugular vein
Hypoglossal canal Hypoglossal nerve
Foramen magnum medulla oblongata/spinal cord, vertebral arteries and venous plexus, accessory nerve roots
Nasal slit anterior ethmoidal nerve and vessels
anterior ethmoidal foramen anterior ethmoidal nerve and vessels
foramina of cribiform plate olfactory nerve (I)
posterior ethmoidal foramen posterior ethmoidal nerve and vessels
Optic canal optic nerve (II), opthalmic artery
superior orbital fissure oculumotor nerve (III), trochlear nerve (IV), opthalmic nerve (VI) branches, abducens nerve (VI), superior opthalmic vein
foramen rotundum maxillary nerve (V2)
Foramen ovale madibular nerve (V3), lesser petrosal nerve, accessory meningeal artery
Foramen spinosum Middle meningeal artery and vein, meningeal branch of V3
Foramen lacerum Not a true foramen (occluded by cartilage). Greater petrossal nerve, deep petrossal erve, and internal carotid artery PASS ACROSS upper end
Carotid canal internal carotid artery and plexus
Hiatus of the greater petrosal nerve greater petrosal nerve
Hiatus of the lesser petrosal nerve lesser petrosal nerve
internal acoustic meatus CN VII, VIII, labyrinthine artery
Jugular foramen CN IX, X, XI, inferior petrosal sinus, sigmoid sinus/internal jugular vein
Hypoglossal canal Hypoglossal nerve
Foramen magnum Medulla oblongata/spinl cord, vertebral arteries and venous plexus, accessory nerve roots
Supraorbital notch/foramen supraorbital nerve and vessels
Infraorbital foramen infraorbital nerve and vessels
mental foramen mental nerve and vessels
superior orbital fissure CN III, IV, VI branches, VI, superior opthalmic vein
Inferior orbital fissure Infraorbital nerve and vessels, zygomatic nerve, inferior opthalmic vein
Infraorbital groove Infraorbital nerve and vessels
Optic canal Optic nerve (II), opthalmic artery
Mandibular foramen inferior alveolar nerve and vessels
Mental foramen mental nerve and vessels
Created by: karkis77