Foramina

Question 1

Cribriform plate

Answer 1

Ethmoid
CN I

Question 2

Anterior ethmoidal foramen

Answer 2

Frontoethmoidal suture
Anterior ethmoidal a,v,n

Question 3

Posterior ethmoidal foramen

Answer 3

Frontoethmoidal suture
Posterior ethmoidal a,v, n.

Question 4

Optic canal

Answer 4

Sphenoid (chiasmatic groove)
CN II, ophthalmic a.

Question 5

Superior orbital fissure

Answer 5

Sphenoid
CN III, IV, V1, VI, superior ophthalmic v.

Question 6

Foramen rotundum

Answer 6

Sphenoid
CN V2

Question 7

Foramen ovale

Answer 7

Sphenoid
CN V3, accessory meningeal a.

Question 8

Foramen spinosum

Answer 8

Sphenoid
Middle meningeal a, recurrent meningeal n (V3)

Question 9

Foramen lacerum

Answer 9

Sphenoid, temporal, occipital
Meningeal branch of ascending pharyngeal a.

Question 10

Hiatus for greater petrosal n

Answer 10

Temporal (petrous), greater petrosal n (CN VII)
Petrosal branch of middle meningeal a.

Question 11

Hiatus for lesser petrosal n.

Answer 11

Temporal (petrous, lat. to hiatus for greater petrosal n.)
Lesser petrosal n. (CN IX)

Question 12

Internal acoustic meatus

Answer 12

Temporal (petrous)
CN’s VII & VIII, internal labyrinthine a.

Question 13

Jugular foramen

Answer 13

Petrooccipital fissure
CN’s IX, X & XI, sigmoid sinus, inf. petrosal sinus, posterior meningeal brs. of occipital & ascending pharyngeal aa.

Question 14

Foramen magnum

Answer 14

Occipital
Spinal cord, spinal roots of CN XI, vertebral aa., ant. & post. spinal aa., dural vv.

Question 15

Hypoglossal canal

Answer 15

Occipital
CN XII, post. meningeal branch of ascending pharyngeal a.

Question 16

Petrotympanic fissure

Answer 16

Temporal (medial to mandibular fossa)
Chorda tympani of CN VII

Question 17

Stylomastoid foramen

Answer 17

Temporal (mastoid post. to styloid process)
SVE of CN VII

Question 18

Carotid Canal

Answer 18

Temporal
Internal carotid a., sympathetic plexus

Question 19

Tympanic canaliculus

Answer 19

Temporal (crest between jugular foramen and carotid canal)
Tympanic branch of CN IX

Question 20

Mastoid canaliculus

Answer 20

Temporal (inside jugular foramen laterally)
Auricular br. of CN X

Question 21

Sphenomaxillary fissure

Answer 21

Ant. infratemporal fossa
3rd portion maxillary a.

Question 22

Pterygopalatine fossa

Answer 22

Inside Sphenomaxillary fissure
3rd portion maxillary a. & pterygopalatine ganglion

Question 23

Sphenopalatine foramen

Answer 23

Deep to Pterygopalatine fossa (medial wall)
Sphenopalatine a., nasopalatine n., posterior superior lateral nasal n.

Question 24

Pterygoid canal

Answer 24

Sphenoid
Nerve and artery of the pterygoid canal

Question 25

Greater palatine canal

Answer 25

Palatine bone
Greater palatine a. & n.

Question 26

Lesser palatine canal

Answer 26

Palatine bone
Lesser palatine a. & n.

Question 27

Supraorbital notch

Answer 27

Frontal
Supraorbital a., v., n.

Question 28

Infraorbital foramen

Answer 28

Maxilla
Infraorbital a., v., n.

Question 29

Anterior Ethmoidal for.

Answer 29

Frontal ethmoidal suture
Anterior Ethmoidal a., v., n.

Question 30

Posterior Ethmoidal for.

Answer 30

Frontal ethmoidal suture
Posterior Ethmoidal a., v., n.

Question 31

Nasolacrimal canal

Answer 31

Maxilla
Nasolacrimal duct

Question 32

Inferior orbital fissure

Answer 32

Upper extent of sp.max. fissure
Infraorbital n., orbital & zygomatic nn., inferior ophthalmic v.

Question 33

Zygomaticofacial foramen

Answer 33

Zygomatic
Zygomaticofacial a.v.n.

Question 34

Incisive canal

Answer 34

Maxilla
Nasopalatine n., Greater palatine a.

Question 35

Mandibular foramen

Answer 35

Mandible
Inferior alveolar a. & n.

Question 36

Mental foramen

Answer 36

Mandible
Mental a. & n.