cranial bones

Question 1

coronal suture

Answer 1

separates the frontal and parietal bones

Question 2

sagittal suture

Answer 2

separates parietal bones from one another

Question 3

squamosal suture

Answer 3

connects a single temporal bone to a single parietal bone on each side

Question 4

lamboidal suture

Answer 4

connects both parietal bones with the occipital bone

Question 5

occipitomastiod suture

Answer 5

separates occipital bone and the mastoid portion of the temporal bone

Question 6

sphenosquamosal suture

Answer 6

separates the sphenoid bone and the squamosal portion of the temporal bone

Question 7

zygomaticotemporal suture

Answer 7

separates the zygomatic bone and the zygomatic process of the temporal bone

Question 8

how many bones make up to cranium

Answer 8

6 (1 occipital, 1 frontal, 2 temporal, 2 parietals)

Question 9

superciliary arches

Answer 9

• on the frontal bone
• lie above medial ends of the eyebrow

Question 10

glabella

Answer 10

• on the frontal bone
• between the superciliary arches

Question 11

frontal eminences

Answer 11

• on the frontal bone
• rounding prominences at upper part of forehead

Question 12

supraorbital margin

Answer 12

• on frontal bone
• upper rim of the eye socket
• inferior to the superciliary arch

Question 13

foramen magnum

Answer 13

• in the occipital bone
• large opening for the spinal cord under the skull
• used to restore decapitations

Question 14

occipital condyle

Answer 14

• the place where atlas attaches the skull
• two condyles near the foramen magnum

Question 15

superior nuchal line

Answer 15

• on the occipital bone
• two curved lines extending out from the external occipital protuberance
• the lower one is the superior one

Question 16

occipital protuberance

Answer 16

• on the occipital bone
• small jutting eminence
• midway between foramen magnum and the angular summit of the bone

Question 17

parietal bone makes up how much of the cranium

Answer 17

2/3

Question 18

parietal eminence

Answer 18

• on the parietal bones
• just above the posterior border of the ears

Question 19

what determines the widest part of the cranium

Answer 19

parietal bone (eminences)

Question 20

squama

Answer 20

• in the temporal bone
• scale like and thin, translucent
• curves medially and is relatively deep behind the zygomatic arch

Question 21

external auditory meatus

Answer 21

• in temporal bone
• ear passage
• tympanic (curved)
• inferior to the squama

Question 22

mandibular fossa

Answer 22

• in the temporal bone
• part of the squama
• small depression on the under surface
• fits the condyle of the lower jaw
• lies anterior to the ear passage

Question 23

mastoid process

Answer 23

• in temporal bone
• creates posterior part of the bone
• lateral to the earlobe
• the muscle attachment site for the sternocleidomastoid muscle

Question 24

zygomatic process

Answer 24

• part of the temporal bone
• connects to the zygomatic arch
• projects from lower part of the squama
• long and thin, extends anteriorly to the cheekbone
• determines the widest part of the face

Question 25

the 2 interior bones of the cranium

Answer 25

ethmoid bone and sphenoid bone

Question 26

ethmoid bone

Answer 26

• cribriform plate
• nose area

Question 27

sphenoid bone

Answer 27

• shaped like a bat/butterfly
• mostly internal