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Flashcards in skull anatomy test study guide Deck (88)
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0

How many bones make up the skull?

22

1

How many bones are cranial bones?

8

2

How many bones are facial bones?

14

3

The cranial bones are divided into two categories, what are they?

Calvaria and floor

4

Which bones are bones of the Calvaria?

◾️frontal
◾️occipital
◾️right parietal
◾️left parietal

5

Which bones are cranial floor bones?

◾️ethmoid
◾️sphenoid
◾️right temporal
◾️left temporal

6

Know what the Squama is on all bones?

The main portion of the bone. Body of bone.
◾️occipital
◾️frontal
◾️parietal
◾️temporal

7

What's the dipole?

Inner layer of spongy bone separating two outer plates of compact tissue

8

What are sutures?

Joints between the cranial bones

9

What are fontanelles?

Areas of incomplete ossification in infant skulls.

➡️There are 6.

10

Where's the coronal suture?

Between frontal and parietal bones

11

Where is the sagittal suture?

On top of head between two parietal bones

12

Where's the squamosal suture?

Between temporal bone and parietal bones

13

Where's the lambdoidal suture?

between occipital and parietal bone

14

What is the Bregma?

Junction of coronal and sagittal sutures

15

What is the lambda?

Junction of sagittal and lambdoidal sutures

16

When adult cranial size is usually achieved?

By age 12

17

What are the 3 general regions of the cranial floor?

◾️anterior cranial fossa
◾️ middle cranial fossa
◾️posterior cranial fossa

18

What's the glabella?

Smooth elevated arch between the supercillary arches

19

What are the orbital plates?

Roofs of the orbit

20

What's the supraorbital foramen?

Opening in the center of the margin

21

What's the supercillary arch?

Located where the eyebrows are

22

What are the supraorbital margins?

Superior part of orbit

23

What's the frontal eminence?

Rounded elevation on either side

24

What's the Squama?

Forms forehead and anterior part of cranial vault

25

What are the frontal bone parts?

◾️glabella
◾️orbital plates
◾️supraorbital foramen
◾️supercillary arch
◾️supraorbital margins
◾️frontal eminence
◾️Squama

26

What are some ethmoid parts?

◾️superior and middle nasal conchae
◾️labyrinths
◾️perpendicular plate
◾️Cristi galli
◾️Cribiform plate

27

What's the superior and middle nasal conchae?

Two thin scroll shaped projections

28

What's the labyrinths?

Contains the ethmoid sinuses or air cells

29

What's the perpendicular plate?

Vertical portion that forms the superior portion of bony nasal septum