The Cranium

Question 1

What are the X2 major parts the cranium is split into?

Answer 1

1) the neurocranium

2) the viscerocranium

Question 2

How many bones form the neurocranium region and what X2 subdivision are these split into?

Answer 2

It is further split into:

1) skull cap
2) cranial base of basocranium

Altogether the neurocranium consists of x8 bones.

Question 3

Of the bones making up the neurocranium, hoe many are paired and how many are unpaired?

Can you name these?

Answer 3

X4 = unpaired
= frontal
= occipital
= sphenoid
= ethmoid 

X2 = paired
= temporal
= parietal

Question 4

What is another name for the neurocranial bones?

Answer 4

Just the cranial bones.

Question 6

How can the viscerocranium be described in terms of location and what its component bones form?

Answer 6

It forms the facial bones in the anterior region of the skeleton, and is also located inferior to the neurocranium.

Question 7

How many bones form the viscerocranium?

How many are paired and how many are unpaired?

Can you name them

Answer 7

There are X14 bones in total.

X2 = unpaired
= mandible
= vomer

X6 = paired
= maxilla
= zygomatic
= inferior nasal conchae
= palatine
= nasal
= lacrimal

Question 8

What is another name for the viscerocranial bones?

Answer 8

The facial bones.

Question 9

Which cranial bone joins with which facial bone to form the nasal septum?

Answer 9

The cranial ethmoid bone and the facial vomer bone.

Question 10

What shape are the palatine bones and what do they form?

Answer 10

They are L shaped and form the hard palate, floor of the eye orbit and part of the nasal cavity.

Question 11

Which are the smallest bones in the skull?

Answer 11

The lacrimal bones

Question 12

Which bone are the superior and middle nasal conchae part of?

Inferior nasal conchae are their own bone.

Answer 12

The ethmoid bone

Question 13

How many air sinuses are in the skull?

Can you name them?

Answer 13

X4

1) frontal
2) ethmoid
3) maxillary
4) sphenoid

Question 14

What are the extra skull bones that some people have called?

Answer 14

Wormian bones

Question 15

What is the suture in the skull which runs straight down the middle of the skull?

Answer 15

The Sagittal suture.

Question 16

What is the suture in the skull which is found running coronally at the back of the head?

What is the name of the point where this suture meets the sagittal suture?

Answer 16

Lambdoid suture

Lambda

Question 17

What is the suture in the skull which is found running across the skull at the front of the head?

What is the name of the point where this suture meets the sagittal suture?

Answer 17

Coronal suture

Bregma

Question 18

Which part of the skull is small and compressed in neonates and which part stays the same?

Answer 18

Neurocranium = the same

Viscerocranium = compressed

Question 19

What is the name of the point in the skull (found on the occipital bone surrounding the foramen magnum) where the atlas articulates with the skull base?

Answer 19

The occipital condyle

Question 20

What are the X3 sections of intercranial fossae?

Answer 20

The anterior, middle and posterior.

Question 21

Which bones make up the anterior cranial fossa?

Answer 21

The frontal, ethmoid and lesser wing do the sphenoid bone

Question 22

Which bones make up middle cranial fossa?

Answer 22

The greater wings of the solenoid bone and the patrous part of the temporal bone.

Question 23

Which bones make up the posterior cranial fossa?

Answer 23

The temporal bone and the occipital bone.

Question 24

Which cranial bone unites with every other one of the cranial bones?

Answer 24

The sphenoid bone

Question 25

What is another name for the skull cap?

Answer 25

Calvaria