Exam 1 Osteology - Skull

Question 1

How many bones in the skull?

Answer 1

22 total
8 cranial
14 facial

Question 2

other names for cranial bones

Answer 2

neurocranium, cranium, brain case

Question 3

calvaria

Answer 3

skull cap

Question 4

facial bones

Answer 4

viscerocranium; not in contact with the brain, all are paired except vomer and mandible

Question 5

neurocranium

Answer 5

frontal
parietal
occipital
temporal
sphenoid

Question 6

viscerocranium

Answer 6

nasal
palatine
lacrimal
zygomatic
maxilla
inferior nasal conchae
vomer

Question 7

fontanelles

Answer 7

frontal
occipital
sphenoidal
mastoid

Question 8

frontal fontanelle

Answer 8

anterior, closes by 18-24m, becomes bregma

Question 9

occipital fontanelle

Answer 9

posterior, closes by 2m, becomes lambda

Question 10

sphenoidal fontanelle

Answer 10

anterolateral, closes by 3m, becomes pterion

Question 11

mastoid fontanelle

Answer 11

posterolateral, closes by 1y, becomes asterion

Question 12

sagittal suture

Answer 12

between 2 parietal bones; perpendicular to frontal and occipital bones

Question 13

coronal suture

Answer 13

between frontal and parietal bones

Question 14

metopic suture

Answer 14

between 2 frontal bones, closes around 6-8y

Question 15

lambdoidal suture

Answer 15

between parietal and occipital bones

Question 16

squamous suture

Answer 16

between parietal and temporal bones

Question 17

frontal bone parts

Answer 17

frontal squama
supraorbital arch
supraorbital foramen
supracilliary ridge
glabella
bregma

Question 18

supraorbital foramen

Answer 18

CN V1

Question 19

glabella

Answer 19

means smooth, hairless

aka mesophryon, antinion, intercilium

Question 20

parietal bone parts

Answer 20

parietal foramina (emissary vein)
temporal lines (temporal m.)

Question 21

temporal bone parts

Answer 21

squamous portion
tympanic portion
mastoid portion
petrous portion

Question 22

squamous portion of the temporal bone

Answer 22

zygomatic process
mandibular fossa
groove for posterior deep temporal a.

Question 23

tympanic portion of the temporal bone

Answer 23

external acoustic meatus

styloid process

Question 24

mastoid portion of the temporal bone

Answer 24

mastoid process
mastoid foramen
stylomastoid foramen
mastoid sinus

Question 25

petrous portion of the temporal bone

Answer 25

groove for sigmoid sinus carotid canal internal acoustic meatus jugular foramen

Question 26

jugular foramen

Answer 26

located between the occipital and temporal bones

Question 27

occipital bone parts

Answer 27

``` foramen magnum occipital condyles hypoglossal canal external occipital protuberance nuchal lines clivus groove for transverse sinus ```

Question 28

inion

Answer 28

greek for back of head/neck; most prominent projecting point of occipital bone

Question 29

sphenoid bone parts

Answer 29

``` body greater and lesser wing anterior/posterior clinoid process foramen lacerum, rotundum, ovale, spinosum sella turcica jugum chiasmatic groove pterygoid plates ```

Question 30

sella turcica

Answer 30

``` "Turkish saddle", houses hypophysis (pituitary) tuberculum sellae hypophyseal fossa dorsum sellae posterior clinoid process ```

Question 31

ethmoid bone

Answer 31

crista galli (attaches to dura mater) perpendicular plate superior/middle nasal concha

Question 32

maxilla parts

Answer 32

frontal process zygomatic process alveolar process infraorbital foramen

Question 33

zygomatic parts

Answer 33

zygomaticofacial foramen | temporal process

Question 34

mandible parts

Answer 34

``` mental protuberance mental tubercle mental forman body angle ramus coronoid process lingual mandibular foramen condylar process mandibular notch ```

Question 35

symphysis menti

Answer 35

fuses 1-2y

Question 36

hyoid bone

Answer 36

greater/lesser horn | body

Question 37

Which bones form the orbit?

Answer 37

``` frontal ethmoid sphenoid maxillary lacrimal zygomatic palatine ```

Question 38

auditory ossicles

Answer 38

malleus incus stapes

Question 39

frontal bone development

Answer 39

intramembranous ossification

Question 40

parietal bone development

Answer 40

intramembranous ossification

Question 41

occipital bone development

Answer 41

both intramembranous and endochondral ossification

Question 42

temporal bone development

Answer 42

both intramembranous and endochondral ossification

Question 43

sphenoid bone development

Answer 43

endochondral ossification

Question 44

ethmoid bone development

Answer 44

endochondral ossification

Question 45

maxilla bone development

Answer 45

intramembranous ossification

Question 46

nasal bone development

Answer 46

intramembranous ossification

Question 47

zygomatic bone development

Answer 47

intramembranous ossification

Question 48

lacrimal bone development

Answer 48

intramembranous ossification

Question 49

vomer bone development

Answer 49

intramembranous ossification

Question 50

palatine bone development

Answer 50

intramembranous ossification

Question 51

hyoid bone development

Answer 51

endochondral ossification

Question 52

mandible bone development

Answer 52

both intramembranous and endochondral ossification