The skull

Question 1

Nasal cavity

Answer 1

Common nasal meatus:
Cribriform plate - ACF
Piriform aperture - Face
Incisive canal - Oran cavity
Sphenopalatine foramen - Pterygopalatine fossa
Choana - Nasopharynx
Aperture of sphenoid sinus - Sphenoid sinus

Superior nasal meatus
Posterior ethmoidal air cells (sinuses)

Middle nasal meatus
Anterior and middle ethmoidal air cells (sinuses)
Semilunar hiatus
Anteriorly: Ethmoidal infundibulum - Frontal sinus
Behind: Aperture of maxillary sinus - Maxillary sinus

Inferior nasal meatus
Nasolacrimal canal - Orbit

Question 2

Common nasal meatus:

Answer 2

Cribriform plate - ACF
Piriform aperture - Face
Incisive canal - Oran cavity
Sphenopalatine foramen - Pterygopalatine fossa
Choana - Nasopharynx
Aperture of sphenoid sinus - Sphenoid sinus

Question 3

Superior nasal meatus

Answer 3

Posterior ethmoidal air cells (sinuses)

Question 4

Middle nasal meatus

Answer 4

Anterior and middle ethmoidal air cells (sinuses)
Semilunar hiatus
Anteriorly: Ethmoidal infundibulum - Frontal sinus
Behind: Aperture of maxillary sinus - Maxillary sinus

Question 5

Inferior nasal meatus

Answer 5

Nasolacrimal canal - Orbit

Question 6

Oral cavity

Answer 6

Incisive canal - nasal cavity (common nasal meatus)
Greater palatine canal - Pterygoid palatine fossa
Lesser palatine canal - Pterygoid palatine fossa
Mandibular canal )mandibular foramen - mental foramen

Question 7

Tympanic cavity (middle ear)

Answer 7

Musculotubarius canal - external base of the skull
a) (Semi)canal of tensor tympani muscle
b) (semi) canal of the auditory tube
Caroticotympanic canaliculi - Carotid canal
Canaliculus of chorda tympani - Fascial canal
Stapedius canaliculus - Fascial canal
Tympanic canaliculus - fossula petrosa (external base of the skull)
Canal for the lesser petrosal nerve - middel cranial fossa
Mastoid antrum - Mastoid air cells/mastoid process
Fenestra vestibuli - Inner ear
Fenestra cochleae - Inner ear

Question 8

Orbit

Answer 8

Aditus orbitae - Face
Optic canal - Middel cranial fossa
Superior orbital fissure - Middel cranial fossa
Inferior orbital fissure
1) Postero-medial part) - Pterygopalatine fossa
2) Antero-lateral part) - Infratemporal fossa
Nasolacrimal canal - Inferior nasal meatus
Anterior ethmoidal canal - Anterior cranial fossa (scala anterior)
Posterior ethmoidal canal - Posterior ethmoidal air cells, sphenoid sinus
Infraorbital canal - Face, fossa canina
Frontal notch - Supraorbital region (forehead)
Supraorbital foramen - Supraorbital region (forehead)
Zygomatic canal - Zygomaticofacial foramen (face)
- Zygomaticotemporal foramen

Question 9

Pterygopalatine fossa

Answer 9

Pterygoid canal - external base of the skull
Greater palatine canal - oral cavity
Lesser palatine canal - Oral cavity
Inferior orbital fissure - Orbit
Pterygomaxillary fissure - orbit
Foramen rotundum - Middel cranial fossa
Sphenopalatine foramen - Nasal cavity (common nasal meatus)

Question 10

Infratemporal fossa

Answer 10

Pterygomaxillary fissure - Pterygopalatine fossa
Inferior orbital fissure - Orbit
Foramen ovale - Middle cranial fossa
Foramen spinosum - Middle cranial fossa
Petrotympanic fissure - Typmanic cavity
Alveolar foramina - Leads to the upper teeth through the alveolar canals of maxilla
Petrosquamous fissure - Middle cranial fossa

Question 11

Facial canal (Fallopian canal)

Answer 11

Canal for the greater petrosal nerve - Opens on the anterior aspect of the pyramid with its own hiatus
Stapedius canaliculus - Tympanic cavity
Canaliculus of chorda tympani - Tympanic cavity

Question 12

Which bones make the borders of the nasal cavity?

Answer 12

Ethmoid bone
Sphenoid bone
Palatine bone
Maxilla
vomer
Inferior nasal concha
Nasal bones
Lacrimal bone

Question 13

What forms the nasal septum?

Answer 13

Perpendicular plate of the ethmoid bone
Sphenoidal crest
Vomer

Question 14

What forms the floor in the nasal cavity?

Answer 14

Maxilla

Horizontal plate of palatine bone

Question 15

What forms the roof in the nasal cavity?

Answer 15

Nasal bones

Cribiform plate of the ethmoid bone

Question 16

What forms the lateral border of the nasal cavity?

Answer 16

Nasal conchas (ethmoid bone + inferior nasal concha)
Sphenopalatine foramen
Maxilla
Lacrimal bone
(Ethmoid bone)

Question 17

Which bones form the borders of the orbit?

Answer 17

Frontal bone
Spenoid bone
Ethmoid bone
Lacrimal bone
zygomatic bone
Maxilla
Palatine bone

Question 18

What forms the superior border of the orbit?

Answer 18

Orbital part of frontal bone
Lesser wing of sphenoid bone
Superior orbital fissure

Question 19

What forms the lateral border of the orbit?

Answer 19

Zygomatic bone

Greater wing of sphenoid bone

Question 20

What forms the medial border of the orbit?

Answer 20

Frontal process of the maxilla
Anterior lacrimal crest
Nasolacrimal canal and groove
Posterior lacrimal crest
Orbital plate of the ethmoid bone
Body of the sphenoid bone
Anterior and posterior ethmoidal foramina

Question 21

What forms the inferior border of the orbit?

Answer 21

Body of Maxilla
Inferior orbital fissure
Infraorbital canal and groove
Body of sphenoid 
Orbital process of palatine bone / Perpendicular part of palatine bone

Question 22

How many bones form the superior border of the orbit?

Answer 22

2 bones
Frontal bone
Sphenoid bone

Question 23

How many bones form the lateral border of the orbit?

Answer 23

2 bones
Zygomatic bone
Greater wing of sphenoid bone

Question 24

How many bones form the medial border of the orbit?

Answer 24

4 Bones
Maxilla
Lacrimal bone
Ethmoid bone
Sphenoid

Question 25

How many bones form the inferior border of the orbit?

Answer 25

3 bones
Maxilla
Sphenoid
Palatine bone