Skull

Question 1

cribriform plate

Answer 1

• part of ethmoid bone

- olfactory foramen for passage of CN 1

Question 2

crista galli

Answer 2

• part of ethmoid bone

- attachment for dura mater

Question 3

sella turcica

Answer 3

• part of sphenoid bone

- location of hypophysis (pituitary gland)

Question 4

optic canals and prechiasmatic sulcus

Answer 4

• sphenoid

- CN 2

Question 5

superior orbital fissure

Answer 5

• sphenoid
• CN 3, 4, 6 (all move the eye)
• CN V1 (opthalmic branch)

Question 6

foramen rotundum

Answer 6

• sphenoid

- CN V2 (maxillary branch)

Question 7

foramen ovale

Answer 7

• sphenoid

- CN V3 (mandibular branch)

Question 8

foramen spinosum

Answer 8

• sphenoid

- middle meningeal artery

Question 9

foramen magnum

Answer 9

• occipital
• spinal cord/brainstem
• CN 11 enters through here
• R & L vertebral arteries/veins

Question 10

jugular foramen

Answer 10

• occipital and temporal
• internal jugular vein
• CN 9, 10, 11 exit through here

Question 11

occipital condyles

Answer 11

form a joint with C1 (atlas): atlanto-occipital joint

Question 12

hypoglossal canal

Answer 12

• occipital

- CN 12 (motor innervation to tongue)

Question 13

carotid canal

Answer 13

• temporal
• internal carotid artery
• entry point for sympathetic nerves to brain (sympathetic plexus/carotid plexus)
• sympathetic nerves direct blood flow to active parts of the brain

Question 14

stylomastoid foramen

Answer 14

• temporal

- CN 7

Question 15

internal acoustic meatus/foramen

Answer 15

• temporal

- CN 7 and 8

Question 16

superior and inferior temporal lines

Answer 16

• temporal, parietal, frontal, zygomatic

- attachment for temporalis

Question 17

coronoid process

Answer 17

• mandible

- attachment for temporalis

Question 18

mandibular angle

Answer 18

attachment for masseter

Question 19

inferior orbital fissure

Answer 19

• V2

- zygomatic nerve (branches off of V2)

Question 20

piriform aperture

Answer 20

• bony opening to nasal cavity
• nasal bones
• maxilla bones

Question 21

nasal cavity borders

Answer 21

• roof = ethmoid
• lateral wall = superior and middle conchae, palatine perpendicular plate, inferior nasal conchae
• floor = maxilla palatine plate, palatine horizontal plate
• medial wall = nasal septum

Question 22

what bones form the nasal septum?

Answer 22

• ethmoid perp. plate
• septal cartilage
• vomer

Question 23

what 7 bones make up the orbit?

Answer 23

• lacrimal
• ethmoid
• sphenoid
• frontal
• maxilla
• palatine
• zygomatic

Question 24

anterior cranial fossa

Answer 24

frontal, ethmoid, sphenoid

Question 25

middle cranial fossa

Answer 25

sphenoid, temporal

Question 26

posterior cranial fossa

Answer 26

occipital, sphenoid, temporal

Question 27

zygomatic arch

Answer 27

• zygomatic process of temporal bone

- temporal process of zygomatic bone

Question 28

hard palate

Answer 28

• lets you breathe and chew at the same time
• palatine process of maxilla
• palatine bone

Question 29

sinuses

Answer 29

• frontal sinus
• ethmoidal air cells/ethmoid sinus
• maxillary sinus
• sphenoid sinus

Question 30

what bones are separated by the coronal suture?

Answer 30

frontal, parietal

Question 31

what bones are separated by the sagittal suture?

Answer 31

R & L parietal

Question 32

what bones are separated by the lambdoid suture?

Answer 32

occipital, parietal

Question 33

what bones are separated by the occipitomastoid suture?

Answer 33

occipital, temporal

Question 34

what bones are separated by the squamous (parietomastoid) suture?

Answer 34

parietal, temporal

Question 35

lambda

Answer 35

intersection of sagittal and lambdoid sutures

Question 36

bregma

Answer 36

intersection of sagittal and coronal sutures

Question 37

pterion

Answer 37

“H” shaped intersection of coronal suture, squamous suture, and sphenoid bone

Question 38

vertex

Answer 38

• most superior part of the calvaria

- located on the sagittal suture

Question 39

asterion

Answer 39

junction of lambdoid, occipitomastoid, and squamous