Neurocranium (Bones of the brain case)

Question 1

tight fitting joint between cranial bone

Answer 1

Sutures

Question 2

midline articulation between two parietal bones

Answer 2

sagittal suture

Question 3

articulation between frontal and parietal bones

Answer 3

coronal suture

Question 4

articulation between the occipital bone from the parietal bones

Answer 4

lambodial suture

Question 5

articulation between temporal and parietal bones

Answer 5

squamosal suture

Question 6

obliterated by 7 or 8 years of age, approximately 6% of adults retain

Answer 6

metopic suture

Question 7

Contains the supraorbital margin, supraorbital tori, labella, frontal sinus

Answer 7

frontal

Question 8

rim of bone that outlines the upper margins of the orbit

Answer 8

Supraorbital margin

Question 9

arch of bones above the orbits

Answer 9

supraorbital tori

Question 10

the smooth generally hairless area between the supraorbital arch

Answer 10

Glabella

Question 11

located posterior to the supraorbital tori, air-filled chambers allow for vocal resonance, opens into nasal cavity)

Answer 11

frontal sinus

Question 12

contains the bregma, parietal eminence and meningeal grooves

Answer 12

parietal

Question 13

intersection of coronal and sagittal sutures, landmark for measurement

Answer 13

bregma

Question 14

lateral bulges, useful for sex estimation

Answer 14

parietal eminence

Question 15

impressions of middle meningeal artery, useful for siding

Answer 15

meningeal grooves

Question 16

Contains the external auditory meatus, the big 4 (zygomatic process, mandibular/glenoid fossa, mastoid process), squamous portion, petrous portion (middle ear with eardrum and ossicals, inner ear with hearing & equilibrium receptors)

Answer 16

temporal

Question 17

located in the tymphanic cavity; malleus, incis, stapes, transmit sound waves from tymphanic membrane (ear drum) to oval window (membrane of the inner ear)

Answer 17

ear ossicles

Question 18

Contains the external occipital protuberance, nuchal lines, occipital condyles, foramen magnum

Answer 18

occipital

Question 19

prominent bump on the back of skull

Answer 19

external occipital protuberance

Question 20

sites of neck muscle attachments

Answer 20

nuchal lines

Question 21

articulation between the cranium and first cervical vertebra

Answer 21

occipital condyles

Question 22

where spinal cord meets the brain

Answer 22

foramen magnum

Question 23

additional bones that can occur within sutures, most common among lambodial suture

Answer 23

sutral / intrasutural

Question 24

large irregular shaped bone that connects the neurocranium and splanchnocranium, several foramina allow for the passage of nerves from the brain to rest of the skull/body. Features; sella turica, great wing, lesser wing, superior orbital fissure, foramen ovale, foramen rotundrum, optical canal

Answer 24

sphenoid

Question 25

irregularly shaped bone that also helps connect the neurocranium and splanchnocranium, allows passage of olfactory nerves from brain to nose, contains sinuses that aid in warming income air. Feautures; crista galli, perpendicular plate, middle nasal concha, superior nasal concha

Answer 25

ethmoid