Lab 2. Human Skeleton: The Skull and Teeth

Question 1

The skull is comprised of how many bones?

Answer 1

29

Question 2

How many of the skull bones or intertwined or fused in adults?

Answer 2

22

Question 3

How many of the skull bones are unpaired

Answer 3

6

Question 4

How many of the skull bones are paired

Answer 4

8

Question 5

How many ear ossicles form part of the complement skull?

Answer 5

6

Question 6

Where do all skull bones belong

Answer 6

The axial skeleton

Question 7

What can cranial be referred to

Answer 7

the braincase

Question 8

Skull

Answer 8

(cranium + mandible)

Question 9

Cranium

Answer 9

skull with no mandible

Question 10

Calvarium

Answer 10

the cranium without the face

Question 11

What are sutures

Answer 11

interdigitations of the bones of the skull that allow the brain to expand in size as the child grows.Once no longer required to expand, sutures tend to fuse (in adulthood). They may be looked upon as interlocking puzzle pieces, except for the squamosal suture in which the temporal bone lies over the parietal bone.

Question 12

coronal suture

Answer 12

between the frontal and parietal bones

Question 13

lambdoid suture

Answer 13

between the occipital and parietal bones

Question 14

saggital suture

Answer 14

between the left and right parietal bones. Area where the sagittal keel and sagittal crest are located in species that require thick bones at the top of the skull to accommodate heavy chewing muscles (e.g. gorrilla)

Question 15

squamasol suture

Answer 15

between the temporal and parietal bones on the left and right sides of the skull

Question 16

basilar (spheno-occipital tori)

Answer 16

underneath the cranium between the occipittal and sphenoid bones

Question 17

Frontal Bone

Answer 17

Only one frontal bone in the skull which is referred to at the forehead. The internal surface of the frontal has grooves for drainage into the sinuses

Question 18

Superciliary arches

Answer 18

(brow ridges or supraorbital tori) Just above the eye orbits are these ridges

Question 19

Parietal

Answer 19

paired bones found on the left and right sides of the head and they protect the braincase. The internal surface has depressions for sinus grooves and impressions of arterial branches that look like a tree.