Skull Foramina Contents (Dustin)

Question 1

Cribriform plate contents

Answer 1

Olfactory Nerves

Anterior Ethmoidal Artery and Nerve

Question 2

Incisive Canal (Y-shaped) contents

Answer 2

Nasopalatine Artery and Nerve (of Scarpa, from V/2)

Question 3

Content and connections of Sphenopalatine Foramen (aka pterygopalatine foramen)

Answer 3

Branches of Nasopalatine Nerves (from V/2)
Sphenopalatine Artery/Veins

Connects Pterygopalatine Fossa with Nasal Cavity (@ common nasal meatus)

Question 4

Content and Connections of Greater Palatine Canal

Answer 4

Greater Palatine N (from V/2)
Descending Palatine Artery
Greater Palatine Artery

Connects Pterygopalatine Fossa with Oral Cavity

Question 5

Content and Connections of Lesser Palatine Canals

Answer 5

Lesser Palatine Nerves (from V/2) and L. Palatine arteries

Connects Pterygopalatine Fossa with Oral Cavity

Question 6

Contents of Mandibular Canal (starts w/ mandibular foramen)

Answer 6

Inferior Alveolar Artery/ Vein/ Nerve

Question 7

Contents of Musculotuberian canal: what’s superior and what’s inferior in the canal?

Answer 7

Superior: Tensor Tympani M.
Inferior: Eustachian (Auditory) Tube

Question 8

Contents of Caroticotympanic Canaliculi

Answer 8

Caroticotympanic Arteries and plexus (sympathetic nerves)

Connects carotid canal w/ tympanic cavity

Question 9

Contents of Canaliculus of Chorda Tympani

Where does it connect?

Answer 9

Chorda Tympani (CN VII), of course
Posterior Tympanic Artery

Connects Facial Canal with Tympanic Cavity

Question 10

What places are connected by the canal of lesser petrosal nerve?

Answer 10

Middle cranial fossa and tympanic cavity

Question 11

What connects the mastoid air cells to the tympanic cavity?

Answer 11

Mastoid Antrum

Question 12

The stapedius canal (contains Stapedius M., CN VII) connects what 2 places?

Answer 12

Facial canal and tympanic cavity

Question 13

Contents of Optic Canal

Answer 13

Optic N, Opthalmic Artery

Question 14

Contents of Superior Orbital Fissure

Answer 14

CN III, IV, V/1, VI

Superior Opthalmic Vein

Question 15

Contents of Inferior Orbital Fissure

1: Postero-medial part + connections
2: Antero-lateral part

Answer 15

1: Infraorbital N, Zygomatic N (From V/2)
Inferior Opthalmic Vein
+ Connects Pterygopalatine Fossa Orbit

2: Infraorbital Artery / Vein

Question 16

The nasolacrimal canal connects what 2 places?

Answer 16

Orbit and inferior nasal meatus

Inside is called nasolacrimal duct, but the bony structure = canal

Question 17

Contents of anterior ethomoidal canal

Answer 17

Anterior Ethmoidal A/ V/ N

nerve is branch of Nasociliary, of CN V/1

Question 18

Anterior ethmoidal canal connects what 2 places?

Answer 18

Orbit with Anterior Cranial Fossa

Question 19

Contents of posterior ethmoidal canal(s)

Answer 19

Posterior Ethmoidal A/ V/ N

nerve is branch of Nasociliary, of CN V/1

Question 20

Posterior ethmoidal canal(s) connect what 2 places?

Answer 20

Orbit with Posterior Ethmoidal Air Cells, Sphenoid Sinus

Question 21

Contents of infraorbital canal

Answer 21

Infraorbital A/ V/ N (from CN V/2)

Question 22

Content of Supraorbital Foramen

Answer 22

Supraorbital Nerve (terminal branch of Frontal N, of CN V/1)

Question 23

Contents of Zygomatic Canal (Y-shaped)

Answer 23

Zygomaticofacial branch (of Zygomatic N, CN V/2)

Zygomaticotemporal branch (also of Zygomatic N)

Question 24

The Zygomatic Canal connects what 3 places?

Answer 24

Orbit with Face (External) Temporal Fossa

Question 25

Content and connections of Foramen Rotundum

Answer 25

Maxillary Nerve (V/2)

Middle Cranial Fossa connected with Pterygopalatine Fossa

Question 26

Content and connections of Foramen Ovale

Answer 26

Mandibular Nerve (V/3)

Middle Cranial Fossa connected with External Base of Skull

Question 27

Content and connections of Foramen Spinosum

Answer 27

Middle Meningeal Artery + Meningeal Branch of Mandibular Nerve

Middle cranial fossa connected with External Base of Skull

Question 28

Content and Connections of Foramen Lacerum

Answer 28

Greater Petrosal Nerve (of CN VII), Lesser Petrosal Nerve (from CN IX)

Middle cranial fossa connected with External Base of Skull

Question 29

Content of Carotid Canal

Answer 29

Internal Carotid Artery

Internal Carotid Plexus (sympathetic nerves)

Question 30

Content of Foramen Magnum (5 things)

Answer 30

1. Spinal Cord / Medulla border
2. Vertebral Arteries
3. Ant. Spinal artery (1) and post. spinal arteries (2)
4. Spinal Root of Accessory nerve (IX)
5. Internal Vertebral Venous Plexus

Question 31

What are the quadrants of the internal acoustic meatus and their contents?
(Start anterosuperior, then anterio-inferior, then posterior-superior…)

Answer 31

1. Facial area - Facial N
2. Cochlear Area - Cochlear N (of VIII)
3. Superior Vestibular Area - Utricoampullary N (of VIII)
4. Inferior Vestibular Area - Saccular N (of VIII)

Question 32

What are the contents of the jugular foramen?

a. pars nervosa
b. pars venosa

Answer 32

a. CN IX, X, XI + Posterior Meningeal Artery

b. Internal Jugular Vein

Question 33

Content and connection of the Condylar Canal

Answer 33

Condylar (Occipital) Emissary Vein

Posterior cranial fossa connected with External Base of Skull

Question 34

What are the 6 connections of the Pterygopalatine Fossa?

Answer 34

1. Pterygoid Canal (of Vidius), 2. Greater / Lesser Palatine Canals, 3. Inferior Orbital Fissure, 4. Pterygomaxillary Fissure, 5. Foramen Rotundum, 6. Sphenopalatine Foramen

Question 35

Contents and Connections of the Pterygoid Canal

Answer 35

Nerve of Pterygoid Canal (includes G. Petrosal N. and Deep Petrosal N.[sympathetic])
Artery of Pterygoid Canal

PPF connected with External Base of Skull

Question 36

Contents of Pterygomaxillary Fissure

Answer 36

Posterior-superior alveolar nerves (from V/2)

Maxillary Artery