cranium, meninges and brain

Question 1

how many bones in the skull (excl. ossicles of ear)

Answer 1

22

Question 2

3 sections of skull

Answer 2

cranium, mandible, facial skeleton (viscerocranium)

Question 3

2 divisions of cranium

Answer 3

vault (houses brain), base (section brain sits)

Question 4

8 segments of cranium

Answer 4

frontal, 2x parietal, occipital, 2x temporal, sphenoid (deep in centre of skull), ethmoid (top of nose)

Question 5

14 segments of facial skeleton

Answer 5

2x maxilla (cheek above upper teeth), 2x zygoma (cheek bones), 2x nasal, 2x lacrimal (inside orbit; related to drainage apparatus of lacrimal glands in top lateral corners of eyes and drain into nasal cavity), vomer (right in middle of skull pointing up to nasal cavity), 2x inferior conchae (infolding bones in nasal cavity to help to increase SA), 2x palatine (top of mouth), mandible (jawbone)

Question 6

anterior view of skull

Answer 6

Question 7

lateral view of skull

Answer 7

Question 8

posterior view of skull

Answer 8

Question 9

inferior view of skull

Answer 9

Question 10

where does sound enter the skull

Answer 10

external acoustic meatus

Question 11

sections of the mandible

Answer 11

ramus (depression), coronoid process (nearest zygomatic bone), mental foramen (for inferior alveolar nerve and vessels)

Question 12

function of bilateral occipital condyle sections of occipital bone

Answer 12

attach to C1 vertebra forming atlanto-occipital joint allowing “yes” movement