Skull part 1

Question 1

what are the 2 sections of the skull?

Answer 1

1. neurocranium (relating to brain)
2. viscerocranium (relating to face)

Question 2

what are the two parts of the viscerocranium? what kind of growth do they experience?

Answer 2

1. cranial vault (intramembranous ossification)
2. cranial base (endochondral ossification)

Question 3

there are _____ paired and ___ unpaired bones in the skull

Answer 3

8, 6

Question 4

what are the paired bones of the skull?

Answer 4

-Parietal
-Temporal
-Maxilla
-Nasal
-Lacrimal
-Zygomatic
-Palatine
-Inferior nasal choncha

Question 5

what are the 6 unpaired bones of the skull?

Answer 5

-Frontal
-Occipital
-Mandible
-Sphenoid
-Ethmoid
-Vomer

Question 6

name the numbered bones

Answer 6

1. frontal
2. parietal
3. sphenoid
4. temporal
5. occipital

Question 7

name the numbered bones

Answer 7

1. frontal
2. zygomatic
3. maxilla
4. vomer
5. nasal
6. inferior nasal choncha
7. sphenoid

Question 8

name the numbered bones

Answer 8

1. frontal
2. ethmoid
3. lacrimal
4. palatine
5. sphenoid
6. zygomatic
7. maxilla
8. nasal

Question 9

name the numbered bones

Answer 9

1. ethmoid
2. frontal
3. sphenoid
4. temporal
5. occipital

Question 10

name the numbered bones
(3 is skinny purple one, sorry i know you cant see it well!)

Answer 10

1. palatine
2. maxilla
3. vomer
4. sphenoid
5. temporal
6. occipital

Question 11

__________ are a type of fibrous joint that only appear in the skull

Answer 11

Sutures

Question 12

sutures fuse in a _____ pattern

Answer 12

predictable

Question 13

name the numbered sutures

Answer 13

1. sagittal
2. lambdoidal
3. occipito-mastoid

Question 14

name the numbered sutures

Answer 14

1. coronal
2. sagittal

Question 15

name the numbered sutures

Answer 15

1. fronto-zygomatic
2. coronal
3. sheno-parietal
4. squamosal
5. lambdoid
6. occipito-mastoid
7. zygomatico-temporal

Question 16

________ is a suture which usually fuses in early childhood, but can persist into adult life (~3% globally)

Answer 16

metopic suture

Question 17

_______ represent areas of intramembranous bone growth that fuse in a predictable pattern. these are only seen in _____

Answer 17

Fontanelles
children

Question 18

_______ occurs If sutures fuse too early, and the brain is forced to grow in other directions

Answer 18

Craniosynostosis:

Question 19

_______ can occur if the sutures fail to fuse

Answer 19

Cleft Lip/Palate

Question 20

what are the spaces within the skull?

Answer 20

-Frontal sinus: two of them → sizes can vary
-Maxillary sinus: tooth roots can extend into this
-Ethmoid air cells: 8 or 9 sinuses between orbits
-Sphenoid sinus

Question 21

name these numbered cephalometric landmarks

Answer 21

1. Gonion
2. Gnathion
3. Nasion
4. Glabella

Question 22

name these numbered cephalometric landmarks

Answer 22

1. porion
2. pterion

Question 23

name these numbered cephalometric landmarks

Answer 23

1. Inion
2. Lambda

Question 24

name these numbered cephalometric landmarks

Answer 24

1. bregma
2. basion