Skull part 1

Question 1

how many bones are in the skull?

Answer 1

29

Question 2

Skull bones are firmly connected by sutures and by

synchondroses , except for ___________ which can move

Answer 2

mandible, hyoid, and auditory ossicles

Question 3

skulls are firmly connected by _____ and _____

Answer 3

sutures ; synchondroses

Question 4

14 bones form the supporting framework of the face, known as _____

Answer 4

splanchocranium or viscerocranium

Question 5

functions of neurocranium and basiccranium (4 points)

Answer 5

1) protect brain
2) ectocranium for mm attachment points
3) endocranium for attachment of stabilizing membrane
4) protect sensory organ for vision, taste, hearing, balance

Question 6

functions of splanchocranium (5)

Answer 6

1) form framework of face
2) entry region for digestive and respiratory system
3) attachment point for some facial mm
4) protect sensory organ for vision, taste, hearing, balance
5) mastication

Question 7

____ surrounds brain

Answer 7

neurocranium

Question 8

base of skull is _____

Answer 8

basicranium or chondrocranium

Question 9

facial skeleton

Answer 9

splanchocranium or viscerocranium

Question 10

sides and roof of skull

Answer 10

neurocranium

Question 11

sides and roof of skull are mainly formed by ______ ossification

Answer 11

intramembranous

Question 12

ethmoid surrounds

Answer 12

olfactory nerves

Question 13

sphenoid surrounds

Answer 13

optic nerves

Question 14

temporals surrounds

Answer 14

auditory nerves

Question 15

occipitals surrounds

Answer 15

spinal cord

Question 16

cranium + mandible =

Answer 16

skull

Question 17

anterior cranial fossa is occupied by ____ lobe of brain

Answer 17

frontal

Question 18

middle cranial fossa is occupied by ____ lobe of brain

Answer 18

temporal

Question 19

posterior cranial fossa is occupied by ____ lobe of brain

Answer 19

cerebellar

Question 20

transverse suture of occipital

Answer 20

sutura Mendoza

Question 21

Inca bone forms due to _____

Answer 21

Inca bone forms due to failure of ossification of squamous part of occipital bone

Question 22

In the skull, ossification occurs from _____ to ____

Answer 22

endocranial to ectocranial

Question 23

basilar suture is also known as

Answer 23

spheno-occipital synchondroses

Question 24

is sutural fusion a precise measure of age estimation?

Answer 24

no

Question 25

newborn skulls have ___ layer

Answer 25

one (unilaminar)

Question 26

the unfused cranial bones have gaps in between them known as _____

Answer 26

fontanelles

Question 27

fontanelles allow for ____

Answer 27

head compression at birth and brain and skull growth

Question 28

secondary altriciality

Answer 28

infant emerging in a state of helplessness

Question 29

what are the 4 features not well developed at birth?

Answer 29

1) sinuses
2) mm crest and lines
3) mm of mastication
4) alveolar processes

Question 30

fusion occurs from ____cranial to _____cranial

Answer 30

endocranial to ectocranial

Question 31

______ (cranial) suture is more convoluted than ___(cranial) suture

Answer 31

ectocranial; endocranial

Question 32

true or false; you can accurately determine the age of an individual by examining the ectocranial surface

Answer 32

false; examine the endocranial rather than ectocranial

Question 33

basilar suture is also known as ______-_____ synchondrosis

Answer 33

spheno-occipital

Question 34

true or false; sutural fusion is NOT a precise method of age determination

Answer 34

true

Question 35

midline anterior (bregmatic) and posterior (lamboidal) fontanelles allow for _______ and ______ brain growth while the right and left sphenoidal fontanelles and right and left mastoid fontanelles allow for _______ brain growth

Answer 35

anteroposterior; mediolateral ; supero-inferior