Skull Foramina and what they transmit

Question 1

Cribriform Plate

Answer 1

Ethmoid bone

transmits CNI

Question 2

Anterior Ethmoidal Foramen

Answer 2

Anterior ethmoidal VAN

Question 3

Posterior Ethmoidal Foramen

Answer 3

Posterior ethmoidal VAN

Question 4

Optic Canal

Answer 4

Sphenoid bone

transmits CNII and Ophthalmic artery

Question 5

Superior Orbital Fissure

Answer 5

CNIII CNIV CNV, CNV1 CNVI and superior ophthalmic vein

Question 6

Foramen Rotundum

Answer 6

CNV2

Question 7

Foramen Ovale

Answer 7

CNV3, accessory meningeal artery

Question 8

Foramen Spinosum

Answer 8

Middle meningeal artery, recurrent meningeal nerve of CNV3

Question 9

Foramen Lacerum

Answer 9

Spehnoid, temporal, occipital bones

transmitting meningeal branch of ascending pharyngeal artery

Question 10

Hiatus for greater petrosal nerve

Answer 10

Temporal bone

transmits greater petrosal nerve of CNVII, petrosal branch of middle meningeal artery

Question 11

Hiatus for lesser petrosal nerve

Answer 11

temporal bone, transmits lesser petrosal nerve of CNIX

Question 12

Internal acoustic meatus

Answer 12

CNVII, CNVIII, internal labyrinthine artery

Question 13

Jugular Foramen

Answer 13

Petrooccipital fissure
Transmits CNIX CNX CNXI, sigmoid sinus, inferior petrosal sinus, posterior meningeal branches of occipital and ascending pharyngeal arteries

Question 14

Foramen Magnum

Answer 14

Occipital bone

spinal cord, spinal roots of CNXI and vertebral arteries

Question 15

Hypoglossal canal

Answer 15

Occipital bone

Anterior/posterior spinal arteries, dural veins, CNXII, posterior meningeal branch of ascending pharyngeal artery

Question 16

Petrotympanic Fissure

Answer 16

Temporal bone

chorda tympani of CNVII

Question 17

Stylomastoid Foramen

Answer 17

Temporal bone

SVE of CNVII

Question 18

Carotid Canal

Answer 18

Temporal bone

Internal carotid artery, sympathetic plexus

Question 19

Tympanic canaliculus

Answer 19

Temporal bone

Tympanic branch of CNIX

Question 20

Mastoid Canaliculus

Answer 20

Temporal bone

Auricular branch of CNX

Question 21

Sphenomaxillary fissure

Answer 21

3rd portion of Maxillary artery

Question 22

Pterygopalatine Fossa

Answer 22

3rd portion of maxillary artery, pterygopalatine ganglion

Question 23

Sphenopalatine foramen

Answer 23

Sphenopalatine artery, nasopalatine nerve, posterior superior lateral nasal nerve

Question 24

Pterygoid canal

Answer 24

sphenoid bone

nerve and artery of pterygoid canal

Question 25

Greater palatine canal

Answer 25

palatine bone | greater palatine artery and nerve

Question 26

Lesser palatine canal

Answer 26

Palatine bone | lesser palatine artery and nerve

Question 27

Supraorbital notch

Answer 27

Frontal bone | Supraorbital VAN

Question 28

Infraorbital foramen

Answer 28

Maxilla | infraorbital VAN

Question 29

Anterior ethmoidal foramen

Answer 29

frontal ethmoidal suture | anterior ethmoidal VAN

Question 30

Posterior ethmoidal foramen

Answer 30

frontal ethmoidal suture | Posterior ethmoidal VAN

Question 31

Nasolacrimal canal

Answer 31

Maxilla | nasolacrimal duct

Question 32

Inferior orbital fissure

Answer 32

infraorbital nerve, orbital and zygomatic nerves, inferior ophthalmic veins

Question 33

zygomaticofacial foramen

Answer 33

zygomatic bone | zygomaticofacial VAN

Question 34

Incisive canal

Answer 34

maxilla | nasopalatine nerve, greater palatine artery

Question 35

mandibular foramen

Answer 35

mandible | inferior alveolar artery and nerve

Question 36

Mental foramen

Answer 36

mandible | mental artery