facial bones

Question 1

how many facial bones in the face

Answer 1

14

Question 2

what does the maxilla form

Answer 2

• upper jaw
• anterior part of roof of mouth
• lateral walls of nasal cavity
• part of floor of orbital
• most of hard palate

Question 3

where does zygomatic bone originate from

Answer 3

two bones that fuse before birth

Question 4

what do the zygomatic bones form

Answer 4

the prominence the cheeks and part of lateral walls of cavities

Question 5

shape of palatine bones

Answer 5

two small L-shaped bones

Question 6

what do the horizontal parts of palatine bones form

Answer 6

• unite to form posterior part of hard palate

Question 7

what do perpendicular parts of palatine bones form

Answer 7

• project upwards to form part of lateral walls of nasal cavity

Question 8

what do palatine bones of upper extremities form

Answer 8

• form part of orbital cavities

Question 9

what kind of bone is the vomer bone

Answer 9

a thin flat bone

Question 10

where does the vomer bone extend to and was does it form

Answer 10

• it extends upwards from the middle of the hard palate
• forms most of inferior part of nasal septum

Question 11

vomer bone superior articulation

Answer 11

perpendicular plate of ethmoid bone

Question 12

vomer bone anterior articulation

Answer 12

vomer bone is in the midline resting on sphenoid bone

Question 13

what does the vomer bone contribute to the formation of?

Answer 13

bony nasal septum separating two conchae

Question 14

what is the inferior nasal conchae?

Answer 14

one of three paired nasal conchae in the nose

Question 15

what does the nasal conchae form and project into?

Answer 15

• forms part of lateral wall of nasal cavity
• projects into it below middle concha

Question 16

what is bone is the superior and middle conchae apart of?

Answer 16

ethmoid bone

Question 17

function of conchae

Answer 17

• collectively increase SA in nasal cavity
• allows inspired air to be warmed and humidified more effectively

Question 18

the smallest bones of the face

Answer 18

lacrimal bones

Question 19

how many lacrimal bones are there and where are they located

Answer 19

• 2
• posterior and lateral to nasal bones
• they enclose eye balls

Question 20

what do lacrimal bones form

Answer 20

• forms medial walls of orbital cavity

Question 21

lacrimal sac function

Answer 21

• a structure that gathers tears and passes them into nasal cavity

Question 22

what houses the lacrimal sac

Answer 22

lacrimal fossa that fuses with maxilla

Question 23

how many nasal bones are there and what do they form?

Answer 23

• 2
• form greater part of lateral and superior surfaces of bridge of nose

Question 24

what do paired nasal bones articulate with?

Answer 24

• articulate with each other in midline
• frontal bone superiorly

Question 25

what is the nasal bone composed of?

Answer 25

• muscle and skin
• supported by bone and cartilage framework

Question 26

external nares

Answer 26

• 2 openings into nasal cavity

Question 27

what is the anterior portion of the nasal septum made of?

Answer 27

cartilage
- not visible on x-ray

Question 28

what is the mandible bone and what does it hold?

Answer 28

• largest bone in human skull
• only movable bone
• holds lower teeth in place and assists in mastication and forms lower jawline

Question 29

what is the mandible composed of and where is it located?

Answer 29

• mandible composed of body and ramus
• located inferior to the maxilla

Question 30

what 3 things does each half of the mandible consist of?

Answer 30

1. a curved body containing lower teeth
2. a ramus that projects upwards at right angles to posterior end of body
3. an angle

Question 31

5 features of the body of the mandible

Answer 31

• mental foramen
• mental protuberance
• submandibular fossa
• sublingual fossa
• symphysis menti (midline)

Question 32

what kind of joint is the temporomandibular joint

Answer 32

• synovial joint

Question 33

what is the temporomandibular joint

Answer 33

• 2 joints that connect your lower jaw to your skull
• joints that slide and rotate in front of each ear and consist of mandible + temporal bone

Question 34

4 basic components of temporomandibular joints

Answer 34

1. head of condyle
2. articular disc
3. mandibular fossa and articular eminence
4. capsule surrounding joint

Question 35

orthopantomography

Answer 35

• radiograph of mandible
• radiograph used to identify hard tissues of oral cavity + surrounding skeletal structures