Cranial Foraminae & Exits Of Cranial Nerves

Front 1

What passes through the Foramen Cecum?
In what Fossa is it?

Back 1

Nasal emissary vein;
anterior fossa

Front 2

Foramina of cribiform plate

Back 2

axons of CN I;
anterior fossa

Front 3

Anterior and Posterior Ethmoid Foramina

Back 3

Vessels and nerves of ant. and post. ethmoid;
anterior fossa

Front 4

Optic Canals

Back 4

CN II and opthalmic Artery;
Middle Fossa

Front 5

Superior Orbital Fissure

Back 5

CN V1, III, IV, VI, opthalmic veins, sympathetic fibers;"Lazy French Tarts Lie Naked In Anticipation Of Sex":
Lacrimal nerve
Frontal nerve
Trochlear nerve
Lateral nerve
Nasociliary nerve
Internal nerve
Abducens nerve
Ophthalmic veins
Sympathetic nerves;
Middle Fossa

Front 6

Foramen Rotundum

Back 6

CN V2;
Middle Fossa

Front 7

Foramen Ovale

Back 7

CN V3 and Accessory Meningeal Artery; Middle Fossa

Front 8

Foramen Spinosum

Back 8

Middle Meningeal Artery and vein, Meningeal branch of CN V3;
Middle Fossa

Front 9

Foramen Lacerum

Back 9

Filled w/ cartilage in life. Internal carotid artery with sympathetic and venous plexuses passes over its superior aspect;
Middle Fossa

Front 10

Hiatus of Greater Petrosal n.

Back 10

Greater petrosal nerve and petrosal branch of middle meningeal artery;
Middle Fossa

Front 11

Foramen Magnum

Back 11

Medulla and meninges (brain stem), vertebral arteries, cervival roots of CN XI, Spinal arteris, dural veins;
Posterior Fossa

Front 12

Jugular Foramen

Back 12

CN IX, X, XI, superior bulb of internal jugular vein, inferior petrosal and sigmoid sinuses, meningeal branches of occipital and pharyngeal artery;
Posterior Fossa

Front 13

Hypoglossal Canal

Back 13

CN XII;
Posterior Fossa

Front 14

Condylar Canal

Back 14

Emissary vein to sigmoid sinus

Front 15

Mastoid Foramen

Back 15

Mastoid emissary vein to sigmoid sinus and occiptial artery meningeal branch;
Posterior Fossa

Front 16

Olfactory Nerve CNI

Back 16

Cribiform Plate to exit cranial cavity and cranium

Front 17

Optic Nerve CN II

Back 17

Optic canal

Front 18

Oculomotor CN III

Back 18

Superior Orbital Fissure

Front 19

Trochlear CN IV

Back 19

Superior Orbital Fissure

Front 20

Trigeminal-Ophthalmic CN V1

Back 20

Superior Orbital Fissure

Front 21

Trigeminal-Maxillary CN V2

Back 21

Foramen Rotundum

Front 22

Trigeminal-Mandibular CN V3

Back 22

Foramen Ovale

Front 23

Abducens CN VI

Back 23

Superior Orbital Fissure

Front 24

Facial CN VII- Motor

Back 24

Internal Acoustic Meatius: to exit cranial cavity
Stylomastoid foramen: to exit cranium

Front 25

Facial CN VII - Intermedius

Back 25

Internal Acoustic Meatus: to exit cranial cavity
Stylomastoid Foramen: to exit cranium

Front 26

Facial CN VII-Chorda Tympani

Back 26

Internal Acoustic Meatus: to exit cranial cavity
Petrotympanic Fissure: to exit cranium

Front 27

Vestibulocochlear CN VIII

Back 27

Internal Acoustic meatus: to exit cranial cavity
*NO* Foramen to exit the cranium

Front 28

Glossopharyngeal CN IX

Back 28

Jugular Foramen

Front 29

Vagus CN X

Back 29

Jugular Foramen

Front 30

Spinal Accessory CN XI

Back 30

Jugular Foramen

Front 31

Hypoglossal CN XII

Back 31

Hypoglossal Canal