Viscerocranium - Connections and Borders GBA

Question 1

Orbit - Posterior Ethmoidal Canal

From where to where, Contents?

Answer 1

Orbit - Posterior Ethmoidal Canal
Posterior Ethmoidal Air Cells and Sphenoid Sinus
Posterior Ethmoidal VAN

Question 2

Nasal Cavity: Semilunar Hiatus - Location?

From where to where?

Answer 2

Nasal Cavity:Semilunar Hiatus

Located in the Middle Nasal Meatus, Btw Uncinate Process and Ethmoidal Bulla.

Anteriorly - Ethmoidal Infundibulum to Frontal Sinus
Posteriorly - Aperture to Maxillary Sinus

Question 3

Tympanic Cavity - Anterior Wall:

Structures and Connections

Answer 3

Tympanic Cavity - Anterior Wall:

1) Musculotubarian Canal (Tensor Tympani+E.Tube)
2) Lesser Petrosal Nerve Canal to Middle Cranial Fossa
3) Caroticotympanic Canaliculus (Sym. Plexus + Artery)
4) Petrotympanic Fissure - Chorda Tympani Nerve Exit

Question 4

Nasal Cavity: Incisive Canal

From where to where, Contents?

Answer 4

Nasal Cavity: Incisive Canal
From Common Nasal Meatus to Oral Cavity
Nasopalatine VAN (from Maxillary Nerve)

Question 5

Orbit - Optic Canal

From where to where, Contents?

Answer 5

Orbit - Optic Canal
From Middle Cranial Fossa
Optic Nerve and Opthalmic Artery

Question 6

Oral Cavity: Mandibular Canal

From where to where, Contents?

Answer 6

Oral Cavity: Mandibular Canal
From Mandibular Foramen to Mental Foramen
Inferior Alveolar VAN

Question 7

Nasal Cavity: Connection of Superior Nasal Meatus

From where to where, Contents?

Answer 7

Nasal Cavity: Connection of Superior Nasal Meatus

to Posterior Ethmoidal Air cells

Question 8

Nasal Cavity: Sphenopalatine Foramen

From where to where, Contents?

Answer 8

Nasal Cavity: Sphenopalatine Foramen
From Common Nasal Meatus to Pterygopalatine Fossa
Superior posterior nasal Nerves (from Nasopalatine V2)
Sphenopalatine Artery

Question 9

Tympanic Cavity - Posterior Wall:

Structures and Connections

Answer 9

Tympanic Cavity - Posterior Wall:

1) Canaliculus of Chorda Tympani - From Facial Canal
2) Facial Canal
3) Antrum for Mastoid Air Cells
4) Pyramidal Eminence for Stapedius Muscle

Question 10

Borders and Bones of the Orbit

Answer 10

Borders and Bones of the Orbit:
Superior - Frontal
Inferior- Zygomatic and Maxilla
Lateral - Zygomatic, Sphenoid and Frontal
Medial - Lacrimal, Palatine, Maxilla and Sphenoid
(Posterior is all of the following except lacrymal)

Question 11

Oral Cavity: Incisive Canal

From where to where, Contents?

Answer 11

Oral Cavity: Incisive Canal
From Common Nasal Meatus to Oral Cavity
Nasopalatine VAN (from Maxillary Nerve)

Question 12

Orbit - Anterior Ethmoidal Canal

From where to where, Contents?

Answer 12

Orbit - Anterior Ethmoidal Canal
Anterior cranial Fossa
Anterior Ethmoidal VAN

Question 13

Orbit - Superior Orbital Fissure
From where to where, Contents?
Not in common tendon ring

Answer 13

Orbit - Superior Orbital Fissure
From Middle cranial fossa
Not in common tendon ring - Frontal, Trochlear, Lacrimal Branches of CNV1 and Superior Opthalmic vein
(LFTS)

Question 14

Orbit - Aditus Orbitae

From where to where, Contents?

Answer 14

Orbit - Aditus Orbitae

to Face

Question 15

Nasal Cavity: Cribriform Plate and Foramina

From where to where, Contents?

Answer 15

Nasal Cavity : Cribriform Plate and Foramina
From Common Nasal Meatus to Anterior Cranial Fossa
Olfactory Nerve and Anterior Ethmoidal VAN

Question 16

Tympanic Cavity - Inferior Wall:

Structures and Connections

Answer 16

Tympanic Cavity - Inferior Wall:

1) Tympanic Canaliculus - Nerve from Fossula Petrosa
2) Styloid Process Impression

Question 17

Emissary Veins goes through which 4 Canaliculi?

Answer 17

Emissary Veins goes through:

Parietal, Occipital, Condylar and Mastoid Canaliculi

Question 18

Orbit - Inferior Orbital Fissure: Posteromedial Part

From where to where, Contents?

Answer 18

Orbit - Inferior Orbital Fissure: Posteromedial Part
to Pterygopalatine Fossa
Infraorbital and Zygomatic Nerves (V2)
Inferior Ophthalmic Vein

Question 19

Orbit - Zygomatic Canal (Zygomatico-Orbital foramen)

From where to where, Contents?

Answer 19

Orbit - Zygomatic Canal (Zygomatico-Orbital foramen)
Zygomaticofacial Nerve canal to face
Zygomaticotemporal Nerve canal to Temporal Fossa

Question 20

Nasal Cavity: Connection of Middle Nasal Meatus
From where to where, Contents?
*Not going through Semilunar Hiatus

Answer 20

Nasal Cavity: Connection of Middle Nasal Meatus

Anterior and Middle Ethmoidal Air cells

Question 21

Musculotubarian Canal

From where to where, Contents?

Answer 21

Musculotubarian Canal
From External base of the Skull to Tympanic Cavity
Superior Semicanal - Tensor Tympani Muscle
Inferior Semicanal - Eustachian Tube

Question 22

Nasal Cavity: Sphenoid Recess

From where to where, Contents?

Answer 22

Nasal Cavity: Sphenoid Recess

From Common Nasal Meatus to Sphenoid Sinus

Question 23

Orbit - Frontal Notch

From where to where, Contents?

Answer 23

Orbit - Frontal Notch
Supraorbital Region - Forehead
Frontal Nerve

Question 24

Nasal Cavity: Nasolacrimal Canal

From where to where, Contents?

Answer 24

Nasal Cavity: Nasolacrimal Canal
From Inferior Nasal Meatus to Orbit
Nasolacrimal Duct (Lacrimal Gland Fluid)

Question 25

Orbit - Superior Orbital Fissure From where to where, Contents? *in common tendon ring *

Answer 25

Orbit - Superior Orbital Fissure From Middle cranial fossa In common ring - oculomotor (Sup+Inf) (CNIII) Nasociliary nerve (branch of ophthalmic nerve) Abducens nerve (CNVI) (SANI)

Question 26

Orbit - Infraorbital Canal | From where to where, Contents?

Answer 26

Orbit - Infraorbital Canal Face, Canine Fossa Infraorbital VAN

Question 27

Pterygopalatine Fossa - Borders

Answer 27

``` Pterygopalatine Fossa Borders: Superiorly - Sphenoid Greater Wing Medially - Palatine Perpendicular Plate Laterally - Pterygomaxillary Fissure Posteriorly - Pterygoid Process Anteriorly - Tuber of Maxilla ```

Question 28

Orbit - Supraorbital Foramen | From where to where, Contents?

Answer 28

Orbit - Supraorbital Foramen Supraorbital Region - Forehead Supraorbital Nerve

Question 29

Infratemporal Fossa - 7 Connections

Answer 29

7 Connections to the Infratemporal Fossa: 1) Pterygomaxillary Fissure 2) Inferior Orbital Fissure (Anterolateral Part) 3) Foramen Ovale 4) Foramen Spinosum 5) Petrotympanic Fissure 6) Alveolar Foramina 7) Petrosquamous Fissure

Question 30

Pterygopalatine Fossa - 6 Connections

Answer 30

Pterygopalatine Fossa - Connections: 1) Sphenopalatine Foramen 2) Greater and Lesser Palatine Foramina 3) Pterygomaxillary Fissure 4) Foramen Rotundum 5) Inferior Orbital Fissure 6) Pterygoid Canal

Question 31

Oral Cavity: Greater and Lesser Palatine Canals | From where to where, Contents?

Answer 31

Oral Cavity: Greater and Lesser Palatine Canals To Pterygopalatine Fossa Greater and Lesser Palatine Nerves Descending Palatine Artery

Question 32

Orbit - Inferior Orbital Fissure: Anterolateral Part | From where to where, Contents?

Answer 32

Orbit - Inferior Orbital Fissure: Anterolateral Part to Infratemporal Fossa Infraorbital Artery and Vein

Question 33

Borders and Bones of the Nasal Cavity | Septum forming bones

Answer 33

Borders and Bones of the Nasal Cavity: Superior - Nasal, Ethmoid, Sphenoid, Frontal Inferior - Palatine and Maxilla Lateral - lacrymal, Ethmoid, Maxilla, Palatine, Nasal and Inferior nasal Concha (Separate bone) Perpendicular plates - Vomer, Ethmoid and Palatine

Question 34

Nasal Cavity: Choana | From where to where, Contents?

Answer 34

Nasal Cavity: Choana | From Common Nasal Meatus to Nasopharynx

Question 35

What are the 3 canals coming off the Facial Canal? | Where does the Facial Nerve Exits?

Answer 35

Facial Canal: -Canal for the Greater Petrosal Nerve to Middle C. Fossa -Stapedius Canal to Tympanic Cavity -Canaliculus Chorda Tympani to Tympanic Cavity Facial Nerve Exits in Stylomastoid foramen.

Question 36

Nasal Cavity: Piriform Aperture | From where to where, Contents?

Answer 36

Nasal Cavity: Piriform Aperture | From Common Nasal Meatus to Face

Question 37

Orbit - Nasolacrimal Canal | From where to where, Contents?

Answer 37

Orbit - Nasolacrimal Canal From Inferior Nasal Meatus to Orbit Nasolacrimal Duct (Lacrimal Gland Fluid)

Question 38

What passes through foramen Ovale?

Answer 38

Mandibular Nerve Accessory Meningeal Artery Lesser Petrosal Nerve

Question 39

Superior Ophthalmic Vein importance clinically?

Answer 39

Runs through Superior Orbital fissure (outside ring). | Anastomosis with Angular vein (from facial) - Infection from face spread to skull interior.