Bones: Neurocranium Flashcards Preview

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Flashcards in Bones: Neurocranium Deck (167)
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1

#16

Arterial Grooves

2

11, 12, 13

External Table

Diplöe - spongy inner portion analogous to the trabecula in long bones

Internal Table 

 

3

Superior sagittal sulcus

the groove for the superior sagittal sinus is a depression formed on the internal surface of the frontal, parietal, and occipital bones in the midline.

It courses from the frontoethmoid junction to the internal occipital protuberance.

4

#32

petro-occipital fissure

 

5

Frontal Bone

- know: frontal sinus, frontal orbits, supraorbital margin

6

Frontal crest

the union of the superior sagittal sinus sulcus margins

the entire ridge!

7

1

Fossa for lacrimal gland

 

houses lacrimal gland

8

glabella

 

slightly depressed area of frontal bone that joins the two superciliary ridges.

9

Frontal or Metopic suture

10

only the part of the highlighted bone within the eye socket

Frontal Orbits

11

What is this area (not anterior cranial fossa, but part of a single bone)?

What are the special markings to note on it?

Orbital Plate of the Frontal Bone

- could consider it the "roof" of the orbits

- its impressiones digitataes ("finger impressions") correspond to the convolutions of the brain

12

#1, not the bone but the portion of it

Squamous Portion of Frontal Bone

13

2

Frontal Sinus

14

area defined in red

supraorbital margin of frontal bone

15

tiny blue-marked area at top of eye socket

supraorbital notch, or foramen if it is more hole-like

16

2

Trochlear pit or fossa

17

Supraciliary arch

18

2

Frontal tuber or eminence

19

Tiny green area in anterior of skull here:

What bones make it up?

Foramen Caecum

- made up of alae of crista galli (of ethmoid) and frontal bone

 - transmits emissary vein from nose to sup. sagittal sinus but is frequently closed

20

What is this hole and what does it connect?

Jugular Foramen

- connects external base of skull to posterior cranial fossa

 

21

blue

piri form aperature

"pear shaped"

22

Occipital Bone

know: Foramen Magnum, Occipital Condyles, Superior/ Inferior Nuchal Lines

23

Cerebellar fossa

24

Cerebral fossa

25

Clivus of Occipital Bone

- slopes downward posteriorly from the sella turcica of the sphenoid

26

Condylar canal

27

Condylar fossa

28

Occipital Condyles

articulate with atlas vertebra

29

Cruciform eminence

30

External occipital protuberance