Head Skull Foramina

Question 1

What nerve(s) run through the hypoglossal canal?

Answer 1

CN XII - hypoglossal n.

Question 2

What nerve(s) run through the tympano-occipital fissure?

Answer 2

CN IX - glossopharyngeal n.
CN X - vagus n.
CN XI - accessory n.

Question 3

List the jugular foramen, the canal for the trigeminal nerve, and internal acoustic meatus from rostral to caudal

Answer 3

canal for the trigeminal nerve
internal acoustic meatus
jugular foramen

Question 4

What nerve(s) does the internal acoustic meatus house?

Answer 4

CN VII - facial n.
CN VIII - vestibulocochlear n.

Question 5

What nerve(s) does the jugular foramen house?

Answer 5

CN IX - glossopharyngeal n.
CN X - vagus n.
CN XI - accessory n.

Question 6

What nerve(s) does the stylomastoid foramen house?

Answer 6

CN VII - facial n.

Question 7

List 1-3

Answer 7

1. external auditory meatus
2. retroarticular foramen
3. tympanic bulla

Question 8

The external acoustic meatus is the landmark between the _____ and _____ ear. It is a [long/short] bony canal

Answer 8

middle
external
short

Question 9

The tympanic bulla forms what?

Answer 9

the tympanic cavity of the middle ear, where the 3 ossicles live

Question 10

What is the hypophyseal fossa?

Answer 10

fossa in the hypophysis
in the middle of the sella turcica

Question 11

What nerves does the orbital fissure house?

Answer 11

CN III - oculomotor n.
CN IV - trochlear n.
CN VI - abducens n.
V1 - ophthalmic n. of trigeminal n.

Question 12

What is the dorsum sellae?

Answer 12

most caudal bony prominence of the sella turcica

Question 13

Label 1-2

Answer 13

1. dorsum sellae
2. hypophyseal fossa

Question 14

What is the chiasmatic groove?

Answer 14

bony groove forming the optic chiasm that corresponds to optic nerve crossover

Question 15

Label

Answer 15

chiasmatic groove

Question 16

What is this?

Answer 16

frontal sinus

Question 17

What is this?

Answer 17

vomer

Question 18

The ethmoidal labyrinth has ______

Answer 18

ethmoturbinate bones

Question 19

What is the cribriform plate?

Answer 19

bony wall between the cranial and nasal cavities

Question 20

Label 1-3

Answer 20

1. ethmoidal labyrinth
2. cribriform plate
3. perpendicular plate

Question 21

What nerves pass through the cribriform plate?

Answer 21

olfactory n. CN I
vomeronasal nn.

Question 22

What is the lacrimal bone?

Answer 22

fossa for the lacrimal sac

Question 23

What is this?

Answer 23

lacrimal bone

Question 24

The infraorbital canal is the canal between the _____ and _______

Answer 24

maxillary foramen
infraorbital foramen

Question 25

Label 1-4

Answer 25

1. infraorbital canal
   2 & 3. infraorbital foramen (V2)
2. maxillary foramen (V2)

Question 26

Label 1-2

Answer 26

1. maxillary foramen
2. pterygopalatine fossa

Question 27

The upper jaw is the _____ + _______

Answer 27

maxilla
incisive bone

Question 28

Label 1-3

Answer 28

1. pterygopalatine fossa
2. sphenopalatine foramen
3. caudal palatine foramen

Question 29

The sphenopalatine and caudal palatine fossa have branches of what nerve?

Answer 29

CN V2 - maxillary n.

Question 30

The major and minor palatine foramen have branches of what nerve?

Answer 30

V2 - maxillary n.

Question 31

Label 1-2

Answer 31

1. horizontal lamina
2. perpendicular lamina

Question 32

What is the bony canal inside the mandible called?

Answer 32

mandibular canal

Question 33

What is the caudal opening of the mandibular canal of the medial side? It is a branch of which nerve?

Answer 33

mandibular foramen
mandibular V3

Question 34

On the lateral side, which foramen can you see on the mandible?

Answer 34

mental foramen