CSD 155 LAB 9: Cranium part 2

Question 1

mandible

Answer 1

• unpaired (becomes a single bone by age 1 through fusion at the mental symphysis

Question 2

parts of the mandible

Answer 2

• body: anterior transverse portion, horseshoe shaped
• ramus: posterior vertical portion
• angle of mandible: junction of the body and ramus
• mental symphysis: anterior point, where the two halves are fused together along the midline of the mandible
• mental protuberance: point of the chin

Question 3

mandibular foramen

Answer 3

• hole on the medial surface of the ramus

Question 4

mental foramen

Answer 4

• hole on the anterior lateral surface of the body

Question 5

coronoid process

Answer 5

• anterior to condylar process, sharply angled anterior extension; anterior-superior point of ramus

Question 6

mandibular condyle

Answer 6

• posterior-superior point of the ramus, communicates with temporal bone to form the temporomandibular joint

Question 7

alveolar process

Answer 7

• on the superior surface of the body, sockets for the lower teeth

Question 8

mandibular notch

Answer 8

• space between the coronoid process and the condyle process

Question 9

maxillae

Answer 9

paired bone, upper face

Question 10

parts of the maxillae

Answer 10

• body: central portion
• anterior nasal spine (ANS): anterior sharp process at the base of the nose
• maxillary tuberosity: posterior bulge behind the last upper molar

Question 11

incisive foramen

Answer 11

small opening at midline of anterior hard palate

Question 12

palatine process

Answer 12

anterior 3/4 of hard palate

Question 13

zygomatic process

Answer 13

lateral processes which attach to the zygomatic bone

Question 14

frontal process

Answer 14

superior processes, form the lateral bony framework of the nose

Question 15

alveolar process

Answer 15

sockets for the upper teeth

Question 16

alveolar ridge

Answer 16

anterior portion of the hard palate, immediately posterior to front teeth, place of articulation for many consonants

Question 17

nasal crest

Answer 17

located at the midline of the superior surface of the palatine process, communicates with the vomer to form part of the nasal septum; longitudinal fgroove that runs fro the ANS to the posterior nasal spine

Question 18

palatine bones

Answer 18

paired, posterior 1/4 of the hard palate, attaches anteriorly to the palatine processes of the maxillae

Question 19

posterior nasal spine

Answer 19

sharp process at the posterior end of the palatine bones

Question 20

vomer

Answer 20

unpaired, forms the inferior posterior portion of the nasal septum at the vertical midline, communicates with nasal crest, attaches superiorly to the perpendicular plate of the ethmoid bone to form the nasal septum

Question 21

zygomatic bones

Answer 21

cheek bones, attach to zygomatic processes of the maxilla and temporal bones to form the zygomatic arch

Question 22

nasal bones

Answer 22

paired, form the bridge of the nose

Question 23

lacrimal bones

Answer 23

smallest facial bones, forms the medial wall of the orbital cavity

Question 24

inferior nasal concha

Answer 24

forms the inferior part of the lateral nasal wall, larger than the middle and inferior nasal concha (which are part of the ethmoid bone)