Foramina

Question 1

Cribiform plate

Answer 1

Ethmoid bone- CNI

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)- CNII, ophthalmic a.

Question 5

Superior orbital fissure

Answer 5

sphenoid- CN III, IV, V1, VI, superior opthalmic 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. (CNVII), petrosal branch of middle meningeal a.

Question 11

Hiatus for lesser petrosal n.

Answer 11

Temporal- lesser petrosal n. (CN IX)

Question 12

Interal acoustic meatus

Answer 12

temporal- CN VII, VIII, internal labryrinthine a.

Question 13

Jugular foramen

Answer 13

petrooccipital fissure- CN IX, X, XI, sigmoid sinus, inferior petrosal sinus, posterior meningeal branches of occipital and ascending pharyngeal a.

Question 14

Foramen magnum

Answer 14

occipital- spinal cord, spinal roots of CN XI, vertebral aa., ant. and post. spinal aa., dural v.

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

Inferior optic fissure

Answer 17

sphenoid- CN V2, infraorbital n, orbital and zygomatic n, inferior ophthalmic v.

Question 18

Stylomastoid foramen

Answer 18

Temporal (mastoid posterior to styloid process)- SVE of CN VII

Question 19

Carotid canal

Answer 19

Temporal- internal carotid a., sympathetic plexus

Question 20

Tympanic canaliculus

Answer 20

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

Question 21

Mastoid canaliculus

Answer 21

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

Question 22

Sphenomaxillary fissure

Answer 22

Ant. infratemporal fossa- 3rd portion of maxillary a.

Question 23

Pterygopalatine fossa

Answer 23

inside phenomaxillary fissure- 3rd portion of maxillary a and pterygopalatine ganglion

Question 24

Sphenopalatine foramen

Answer 24

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

Question 25

Pterygoid canal

Answer 25

sphenoid- Nerve and artery of pterygoid canal

Question 26

Greater palatine canal

Answer 26

Palatine bone- greater palatine a & n

Question 27

Lesser palatine canal

Answer 27

Palatine bone- lesser palatine a & n

Question 28

Supraorbital notch

Answer 28

Frontal- supraorbital a,v,n

Question 29

Infraorbital foramen

Answer 29

infraorbital a,v,n

Question 30

Nasolacrimal canal

Answer 30

Maxilla- nasolacrimal duct

Question 31

Zygomaticofacial foramen

Answer 31

zygomatic- zygomaticofacial a,v,n.

Question 32

Incisive canal

Answer 32

Maxilla- nasopalatine n, greater palatine a.

Question 33

Mandibular foramen

Answer 33

mandible- inferior alveolar a & n.

Question 34

Mental foramen

Answer 34

Mandible- mental a & n